Rose v. County of Fresno CA5 ( 2021 )


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  • Filed 12/7/21 Rose v. County of Fresno CA5
    NOT TO BE PUBLISHED IN THE OFFICIAL REPORTS
    California Rules of Court, rule 8.1115(a), prohibits courts and parties from citing or relying on opinions not certified for
    publication or ordered published, except as specified by rule 8.1115(b). This opinion has not been certified for publication
    or ordered published for purposes of rule 8.1115.
    IN THE COURT OF APPEAL OF THE STATE OF CALIFORNIA
    FIFTH APPELLATE DISTRICT
    MELISSA ANN ROSE et al.,
    F079483
    Plaintiffs and Respondents,
    (Super. Ct. No. 17CECG02164)
    v.
    COUNTY OF FRESNO,                                                                      OPINION
    Defendant and Appellant.
    APPEAL from a judgment of the Superior Court of Fresno County. Kimberly A.
    Gaab, Judge.
    McCormick, Barstow, Sheppard, Wayte & Carruth, Todd W. Baxter; Overstreet &
    Associates David M. Overstreet and Chester E. Walls for Defendant and Appellant.
    Miles, Sears & Eanni, Douglas L. Gordon and Lyndsie N. Russell for Plaintiff and
    Respondent Melissa Ann Rose.
    Fowler Helsel Vogt and John C. Fowler for Plaintiff and Respondent David Bray.
    -ooOoo-
    Defendant County of Fresno (County) appeals from a jury verdict in favor of two
    bicyclists who fell and were injured in March 2017 when they encountered sand blocking
    Auberry Road’s northbound bike lane. County contends (1) the trial court erred in
    admitting expert opinion testimony about how long the sand had been in the bike lane
    because there was no basis in fact for the opinion; (2) the hazard was obvious as a matter
    of law and, therefore, the sand did not meet the statutory definition of a “dangerous
    condition”;1 (3) the primary assumption of risk doctrine protects it from liability because
    it did not unreasonably increase the risks to plaintiffs beyond those inherent in road
    bicycling; and (4) the trial court erred in rejecting its proposed jury instructions setting
    forth Vehicle Code provisions applicable to bicyclists.
    We conclude the trial court did not abuse its discretion in concluding a registered
    environmental health specialist qualified as an expert and in admitting his opinion on
    how long the sand had blocked the bike lane. We further conclude the trial court
    properly determined the jury should decide (1) whether the sand constituted a dangerous
    condition of public property and (2) whether County unreasonably increased the risks
    inherent in road bicycling. Lastly, County has not demonstrated the court’s refusal to
    give its proposed instructions quoting certain Vehicle Code provisions was prejudicial
    error.
    We therefore affirm the judgment.
    FACTS
    County’s Roads and Policies
    Fresno County is one of the largest counties in the state, and it has more miles of
    road than any other county. County’s Roads Department handles road maintenance,
    which includes addressing surface hazards, for approximately 3,500 miles of roadway.
    California law requires local governments to adopt a long-term general plan and
    requires such plans to include a circulation element. (§§ 65300, 65302, subd. (b).)
    Beginning in 2011, the circulation element was required “to plan for a balanced,
    1     “ ‘Dangerous condition’ ” is defined by Government Code section 830,
    subdivision (a). Unlabeled statutory references are to the Government Code.
    2.
    multimodal transportation network that meets the needs of all users of streets, roads, and
    highways for safe and convenient travel in a manner that is suitable to the rural,
    suburban, or urban context of the general plan.” (§ 65302, subd. (b)(2)(A).) The term
    “user” includes pedestrians, bicyclists, motorists and others. (§ 65302, subd. (b)(2)(B).)
    In accordance with the statutory requirements, the Fresno County General Plan contains a
    transportation and circulation element that sets forth County’s policies and objectives for
    bicycle use. Section D of that element addresses bicycle facilities and acknowledges the
    increased use, acceptance and importance of bicycles as a means of recreation,
    transportation and healthful exercise. The element’s policies “seek to provide a safe,
    continuous, and easily accessible bikeway system that connects cities to other
    communities, to major facilities, and to recreational areas and regional parks [and] strive
    to establish bikeways along existing recreational bicycling routes, to encourage safety-
    oriented design, to link bikeways to other modes of transportation, and to provide
    adequate funding.” Section D contains Policy TR-D.1, which states that “County shall
    implement a system of recreational, commuter, and inter-community bicycle routes in
    accordance with the Regional Bikeway Plan.” Policy TR-D.7 states: “County shall
    construct and maintain bikeways to minimize conflicts between bicyclists and motorists.”
    The General Plan’s implementation program includes Program TR-D.C, which
    states: “County shall require that sufficient pavement width for bikeways shown on the
    Regional Bikeway Plan be constructed in conjunction with road construction projects.”
    Program TR-D.D states: “County shall use California Department of Transportation
    (Caltrans) bikeway design standards as guidelines for construction of Class I, II, III
    bicycle facilities.”
    The “Fresno County Regional Bicycle & Recreational Trails Master Plan” was
    adopted in September 2013 (Regional Bikeway Plan) by County’s Board of Supervisors,
    which certified “its compliance with State law and the October 2000 Fresno County
    General Plan.” The Regional Bikeway Plan describes the different classes of bikeways.
    3.
    Class I bikeways also are known as multiple purpose paths or trails and are shared by
    cyclists, pedestrians, and joggers, but not vehicles. Class II bikeways or bicycle lanes are
    the class involved in this litigation. They are one-way lanes paired on opposite sides of
    the street to facilitate two-way travel. Cyclists travel in their own lane, separated from
    traffic by a white stripe six inches wide. Class II bicycle lanes “on paved shoulders are
    commonly found on rural roads without curbs and sidewalks. Shoulder bikeways provide
    a paved shoulder for the bicyclist to travel outside of the travel lane. The County uses the
    minimum width for a typical Shoulder Bicycle Lane per California Highway Design
    Manual, CA-MUTCD, and AASHTO standards.” 2
    The Regional Bikeway Plan includes Goal BP-D, which states: “Improve
    bicycling safety, reduce bicycle-related collisions, establish educational opportunities
    aimed at all levels of bicyclists, and promote safer driving behaviors among cyclists and
    motorists.” Policy BP-D.1 states: “Provide bikeway maintenance such as pavement
    repairs, striping, signage, tree trimming, debris removal, and any other upkeep as
    financially feasible.”
    The Accident Location
    Plaintiffs’ bicycling accident occurred on northbound Auberry Road, about
    0.6 miles south of Frontier Road. Auberry Road is a two-lane, paved roadway with
    designated bike lanes in each direction and a speed limit of 55 miles per hour. Auberry
    Road is commonly used for road bicycling because it is accessible to urban areas, has
    bike lanes, and provides access to higher elevation riding. The bike lanes were designed
    to be four feet wide, were separated from vehicle traffic by a six-inch white stripe, and
    were constructed in 1995. As actually built, the width of the bike lane varies. At the
    accident location, the road curves to the right and the width of the bike lane tapers from
    2      CA-MUTCD refers to the California Manual on Uniform Traffic Control Devices
    and AASHTO refers to the American Association of State Highway and Transportation
    Officials.
    4.
    4.1 feet to 3.6 feet within a 65-foot stretch and then tapers to 2.9 feet. These distances
    were measured from the center of the six-inch stripe marking the bike lane to the base of
    the sloped asphalt berm that separates the bike lane from the earth and shoulder to the
    right of the road. The asphalt berm was approximately four inches high at the accident
    location.
    County owns an easement that contains Auberry Road and it controls and
    maintains the roadway. County allows the general public access and use of the roadway
    and bike lanes. County’s Roads Department divides its maintenance operations into
    areas. Area 11, where the accident occurred, contains approximately 187 miles of road,
    or about five percent of County’s total. Area 11 covers Auberry Road from just south of
    the accident location to the mountainous region around Shaver Lake. Conditions in
    Area 11 are different from the other areas because it is more mountainous. Area 7, which
    is just south of Area 11, is primarily an urban area that also includes farming.
    The Bicyclists
    On Sunday, March 19, 2017, Darren Cousineau, Kent Johnson and Mark
    Updegraff met plaintiff David Bray at his house, intending to ride their bicycles from
    Fresno to Bass Lake and back, a distance of approximately 55 miles. The weather was
    partly cloudy with no rain. Bray described the conditions as clear and dry. The group of
    four rode from Bray’s house to Sherry’s Roadhouse on Auberry Road using bike lanes
    without encountering any problems. The roadhouse was commonly used by cyclists as a
    destination for shorter rides and as a stopping place on longer rides. Cousineau described
    Auberry Road as an artery road that bicyclists use to get to more challenging roads at
    higher elevations.
    At the roadhouse, Bray immediately recognized plaintiff Melissa Rose and started
    a conversation with her and her father, John Moore. Rose knew Bray and the other three,
    having ridden with them previously. During the conversation Bray learned Rose and her
    father were riding to Prather, the same direction as Bray. They decided to ride together
    5.
    as a group. Meanwhile, Cousineau spoke with Tou Pha, another rider headed in the same
    direction, and Pha joined the group. The seven riders left the roadhouse, crossed Auberry
    Road, and took Auberry Road’s northbound bike lane.
    Bray estimated that he had ridden Auberry Road north of the roadhouse more than
    30 times before the accident occurred. Rose also was familiar with the area. As part of
    her job with the school district, she drove Auberry Road to Foothill Elementary School
    and other schools in the area about five to 10 times a year. From December 2016 through
    the date of the accident, Rose had not ridden Auberry Road in the area of the accident but
    had driven that route.
    From the time the group left the roadhouse until they reach the accident site, they
    rode in Auberry Road’s bike lane and encountered no hazards or issues. The group rode
    in a formation referred to as a paceline, which is common. Riding in a paceline is a
    fundamental skill for road bike riders that allows them to ride predictably and safely in a
    single file. The first rider sets the pace and blocks some of the wind, allowing following
    riders to exert less energy. When the lead rider becomes fatigued, he or she leaves the
    line and works their way to the back of the line and the next rider takes the lead and sets
    the pace. Typically, the front wheel of a following rider is about one to two wheel
    diameters behind the back wheel of the rider ahead. 3 Bicyclists in a paceline are offset,
    rather than directly in line behind the rider in from of them. The amount of the offset
    varies, but usually is approximately six inches. Offsetting allows the following rider
    better visibility of the roadway ahead and can reduce the effects of a crosswind.
    The Sand and Accident
    As the group approached the accident site, Pha was the lead rider in the paceline.
    Pha had ridden in the area the week before the accident. When he got to the area where
    the sand was located, Pha gave a signal by pointing with his fingers to where the obstacle
    3      The diameter of a wheel is approximately 27 inches.
    6.
    was going to be. This signaling technique is used to alert the riders in back that they are
    approaching an object they should avoid. Pha testified that he had no problems getting
    around the sand.
    Cousineau, the second rider in the paceline, was asked if he could recall how far
    away he was when he first recognized that the bike lane was blocked with sand. He
    answered:
    “Well, it happened very quickly. I don’t know that I can give you a
    measurement distance-wise. But the reason is because the -- the sandbar
    was tapered. So, you know, as we approached it, it’s kind of a very thin
    line against the gutter and then gradually and then very quickly filled up the
    entire bike lane. So as soon as we recognized there was a problem, there
    was a problem. And so it was very quick.”
    Cousineau testified that Pha, he and Rose’s father, who was third in line, stayed in
    the bike lane until they approached the sand bar, took a quick look back to make sure
    there was no traffic, saw it was safe to go around the hazard, and went around it by going
    into the traffic lane between six and 12 inches from the bike lane stripe. Cousineau
    testified the sand bar created a hazard because it forced “bicyclists to leave the dedicated
    bicycle lane and move out into the vehicular traffic lane.” As Cousineau went by the
    sand, he pointed with his finger and yelled “sand.” Cousineau stated that approximately
    four to five seconds after he moved back into the bike lane, he heard a loud crunching
    sound, and the first three riders slowed down, looked back, and saw there had been an
    accident with riders down. Cousineau saw Rose lying in the roadway, moaning in pain.
    Rose’s father and others assisted Rose out of the roadway over to the shoulder. By the
    time Cousineau made his way back to the accident scene, Bray had stood up and was
    holding his wrist. Bray had blood on his fingers and asked Cousineau for some Advil.
    Rose testified that from the roadhouse to the accident scene she rode in the
    paceline behind her father. As the paceline approached the sand, Rose saw cyclists ahead
    of her signal with their hands to get over and she immediately started getting over. She
    7.
    then saw some of the sand as they were passing it and thought that it was the sand being
    referred to. When Rose passed that part of the sand bar, she was inside the bike lane
    between the sand and the white stripe. Rose kept going and tried to stay as close to the
    white line as she could. She thought she heard someone yell “car” and was not sure
    whether she touched some of the sand before or after hearing the warning. When Rose
    went into the sand, her bike lost traction, but she initially was able to maintain her
    balance. When she came in contact with more sand, Rose lost control and went down,
    falling into the roadway and landing on her left side. After Rose fell, she was hit by a
    car. Describing the interval between her fall and being hit by the car, Rose stated: “It
    happened so fast.” The car pulled off to the side, but then drove away. Cousineau
    testified the car was a silver Nissan Sentra, and it pulled onto the shoulder about 180 feet
    from the accident scene and came to a complete stop before leaving. The driver of the
    car was never identified.
    Bray rode in the paceline following Rose, approximately five feet behind her.
    When Bray became aware there was sand ahead, he veered to the left like Rose. Bray
    testified that “it didn’t look to be any particular hazard at all from a distance. Not until I
    got right on top of it did I realize that there was a hazard.” Bray saw Rose’s back wheel
    move a little bit side to side and heard her say “whoa.” Bray testified that “we both
    moved farther to the left to avoid the sand. And then in a flash she was going down.”
    Around that time, Bray heard someone call out “car,” a signal to other cyclists that a car
    was coming up from behind. Bray steered to the right into the sand to avoid Rose and the
    car, which caused him to lose control and fall. Rose was already on the ground when
    Bray was falling. Bray testified his fall happened so fast, he did not “know how [he] got
    on [his] feet or out of [his] pedals or any of that.” The next thing he knew, he was
    standing holding his hand, which had taken the brunt of the fall.
    Johnson was the sixth rider in the paceline, following Bray by two or three bicycle
    lengths. The accident happened before Johnson got to the sand. Johnson saw Rose lose
    8.
    control, fall into the roadway, and get hit by the car. Johnson got off his bike and walked
    up to the accident site.
    Updegraff, the last rider, testified he was about 10 to 15 yards behind Johnson and
    about 20 to 30 yards behind Rose. Updegraff also stopped before he got to the sand. He
    got out his cell phone and called 911. While Updegraff was making that phone call, the
    car that hit Rose drove off and Updegraff was unable to get a picture of it.
    Post-Accident
    Cory Walczak, an officer with the California Highway Patrol (CHP), was notified
    by dispatch of a collision involving a bicyclist on Auberry Road. When he arrived at the
    scene, a fire truck and another CHP officer, Justice Jones, were there. The ambulance
    had already left. The CHP officers conducted an investigation. They spoke to the other
    riders, got statements from them, photographed the scene, and took measurements.
    Officer Walczak completed a traffic collision report that documented their findings.
    Officer Walczak’s testimony about Vehicle Code sections that apply to bicyclists and the
    use of bike lanes is described in part IV.B. of this opinion.
    During his testimony, Officer Walczak explained a series of photographs showing
    the area of the accident and the sand bar in the bike lane. The photographs showed the
    bike lane’s white stripe was not covered by sand. They also showed a narrow trench the
    officers dug in the sand bar to measure its depth. In some places, the sand in the bike
    lane was seven inches deep and covered the four-inch high asphalt berm at the right edge
    of the bike lane. The officers also measured the sand bar’s length and width, determining
    it was 99 feet long and 4 feet wide at its widest.
    Carl Hall, Jr., supervises an Area 7 road crew. He responded to a call from the
    sheriff’s dispatcher to clean up the sand in the bicycle lane, even though it was in Area
    11. After arriving at the scene, Hall spoke with the CHP officers about what needed to be
    done. With Hall using a shovel and the officer following behind with a broom, it took
    them approximately 30 minutes to clean the bike lane. Photographs of the area after they
    9.
    finished showed a dark area in the bike lane where the sand had been moist. The dark
    area was surrounded by a lighter color where the sand had been dry. The officer also told
    Hall he wanted the entire length of Auberry Road swept the next day to deal with any
    other road deposits that might be there.
    PROCEEDINGS
    In June 2017, Rose filed a complaint against County alleging a dangerous
    condition of public property caused the bicycle accident. In August 2017, Bray filed a
    complaint against County, also alleging a dangerous condition of public property.
    County answered the complaints, asserting multiple affirmative defenses including
    reasonable implied assumption of the risk. In November 2017, the trial court
    consolidated the two actions based on the parties’ stipulation.
    Rose and Bray filed motions for summary adjudication of certain issues. In
    November 2018, the trial court denied the motions, concluding there were triable issues
    of material fact as to whether County violated section 835 and whether the primary
    assumption of risk doctrine applied.
    The trial took 13 days, starting on January 23, 2019, and ending on February 20,
    2019, when the jury returned its verdict. Plaintiffs’ accident reconstruction expert, Rene
    A. Castaneda, evaluated the scene of the accident and estimated Rose’s path in relation to
    the sand. Castaneda also collected data from the Garmin unit on Rose’s bicycle and
    determined her speed was about 20 miles per hour three seconds before the accident.
    Castaneda concluded Rose first entered the sand a second before she fell, was in the sand
    for three tenths of a second, exited the first patch, entered the sand a second time, and fell
    0.23 seconds later. He stated Rose’s bicycle engaged the sand in such a way that the
    friction forces caused an unbalanced condition, resulting in her fall.
    Cousineau testified as both a percipient witness and an expert witness about how
    and when the sand bar formed in the bike lane. Cousineau’s qualifications as an expert
    witness and his opinions about the formation of the sand bar are addressed in part I of this
    10.
    opinion. Benjamin Medrano, a road bicycling safety expert retained by plaintiffs,
    testified the sand bar “was a dangerous situation” and was much larger than obstacles he
    had encountered while bicycling. Medrano testified cyclists could circumvent the sand
    bar by leaving the bike lane, “but there was a hazard of traffic.” Medrano had no
    criticism of Bray’s decision to steer right into the deeper sand to evade Rose and traffic.
    After plaintiffs presented their evidence, County moved for nonsuit. The court
    denied the motion, concluding there were disputed issues of fact to be decided by the
    jury.
    County’s evidence included the testimony of Thomas Braun, a registered engineer
    who specializes in accident reconstruction, and Dr. Bong Walsh, an expert in human
    factors. Braun stated the sand was an obstruction for bicyclists and it was foreseeable
    that a bicyclist running into the sand would lose control. Braun testified that even a little
    sand can cause a rider to fall, “[d]epending on speed, steering and braking inputs.” Braun
    agreed it would have been reasonable for Rose to stay in the bike lane if she could have
    done so safely, but to avoid the sand she needed to be on the white stripe or just into the
    northbound traffic lane.
    Based on the photographs, Walsh concluded that the sand could be seen “from a
    fair distance” and the large surface area of the sand gave fair warning that it was
    something that should be avoided. He also stated the fact the asphalt berm on the edge of
    the bike lane disappeared into the sand indicated the depth of the sand, providing further
    information that a rider should go around the sand. Walsh testified that the entirety of the
    bike lane stripe was visible, which indicated a rider would not have to go very far into the
    roadway to go around the sand. He acknowledged that contrast is important to visual
    perception and stated that from certain distances “it would probably be difficult to tell
    whether the sand was touching the line or not.” When asked if he had any criticism of
    Rose trying to go around the sand while staying in the bike lane, Walsh responded:
    “Well, frankly, yes. I mean, because the sand does cover the bike lane, so – and the
    11.
    riders in front of her had established a safe line around the sand that was not going far
    into the roadway. And so it just seems like if you follow that, then you’re okay.” In
    contrast, Walsh stated Bray’s decision to turn into the sand to avoid Rose was reasonable.
    Before closing argument, County moved for a directed verdict on the grounds that
    the court could determine as a matter of law that there was no dangerous condition and
    that liability was barred by immunities and the primary assumption of risk doctrine. The
    court denied the motion.
    The trial court’s jury instructions defining County’s liability for a dangerous
    condition of public property were based on the Judicial Council of California Civil Jury
    Instructions (CACI) Nos. 1100 through 1104. Its jury instruction on the primary
    assumption of risk doctrine was based on CACI No. 472 and is quoted in part III.B.2. of
    this opinion. The special verdict form included 18 questions.
    On February 20, 2019, the jury reached its verdict. The jury found County was
    75 percent responsible for Rose’s injuries, Rose was 25 percent responsible for her
    injuries, and the unknown driver was zero percent responsible. As to Bray’s injuries, the
    jury found County was 70 percent responsible and Rose was 30 percent responsible. The
    jury determined Rose’s and Bray’s past and future economic and noneconomic damages
    totaled $189,007.81 and $209,882, respectively. After adjustments for comparative fault,
    County was liable to Rose for $141,755.86 and was liable to Bray for $161,882.
    County filed a notice of intent to move for new trial and a notice of motion for
    judgment notwithstanding the verdict. In May 2019, the motions were argued before the
    trial court. Two weeks after the hearing, the court filed orders denying the motions. In
    June 2019, County filed a timely appeal.
    12.
    DISCUSSION
    I.     EXPERT TESTIMONY
    Plaintiffs’ cause of action alleging a dangerous condition of public property
    required them to prove that Auberry Road was in a dangerous condition at the time of the
    injury and that County “had notice of the dangerous condition for a long enough time to
    have protected against it.” (CACI No. 1100.) Addressing how long the County had
    notice of the dangerous condition, Cousineau testified that, in his opinion, the sand bar
    had been in place since February 20, 2017, which was 27 days before the accident.
    Explaining this date, he stated that the last significant rainfall in the area occurred on
    February 20, 2017.
    On the question of how the sand bar formed, Cousineau testified that, in his
    opinion, the sand bar formed through the process of erosion during the months of
    December through February. Cousineau described erosion as a geological process where
    precipitation, flowing water and wind causes erodible material such as sediment and sand
    to move from one location to another.
    County argues the admission of Cousineau’s expert testimony constitutes
    reversible error because there was no basis in fact for his opinion about how and when
    the sand bar formed in the bike lane. County refers to the principle that an “ ‘expert
    opinion is worth no more than the reasons upon which it rests’ ” (Jennings v. Palomar
    Pomerado Health Systems, Inc. (2003) 
    114 Cal.App.4th 1108
    , 1117 (Jennings)) and
    asserts Cousineau’s opinions were purely conclusory because they were unaccompanied
    by a reasoned explanation connecting the factual predicates with the ultimate conclusion.
    We disagree.
    A.      Legal Principles
    “A person is qualified to testify as an expert if he has special knowledge, skill,
    experience, training, or education sufficient to qualify him as an expert on the subject to
    13.
    which his testimony relates.” (Evid. Code, § 720, subd. (a).) Such expert witnesses may
    present opinions that are “[r]elated to a subject that is sufficiently beyond common
    experience that the opinion of an expert would assist the trier of fact” and are based on
    matter “that is of a type that reasonably may be relied upon by an expert in forming an
    opinion upon the subject to which his testimony relates.” (Evid. Code, § 801.)
    “The trial court’s preliminary determination whether the expert opinion is founded
    on sound logic is not a decision on its persuasiveness. The court must not weigh an
    opinion’s probative value or substitute its own opinion for the expert’s opinion. Rather,
    the court must simply determine whether the matter relied on can provide a reasonable
    basis for the opinion or whether that opinion is based on a leap of logic or conjecture.”
    (Sargon Enterprises, Inc. v. University of Southern California (2012) 
    55 Cal.4th 747
    , 772
    (Sargon).) “In short, the gatekeeper’s role ‘is to make certain that an expert, whether
    basing testimony upon professional studies or personal experience, employs in the
    courtroom the same level of intellectual rigor that characterizes the practice of an expert
    in the relevant field.’ ” (Ibid.)
    Whether a witness qualifies as an expert in a particular field is addressed “to the
    sound discretion of the trial court.” (Brown v. Colm (1974) 
    11 Cal.3d 639
    , 647.) Some
    decisions describe this discretion as “broad.” (E.g., People v. McDowell (2012) 
    54 Cal.4th 395
    , 426; Antelope Valley Groundwater Cases (2020) 
    59 Cal.App.5th 241
    , 262.)
    Thus, appellate courts apply the abuse of discretion standard when reviewing a trial
    court’s determination that a witness was qualified to present expert testimony. (Brown v.
    Colm, at p. 647 [exclusion of plaintiff’s sole expert was a prejudicial abuse of discretion];
    see Sargon, supra, 55 Cal.4th at p. 773.)
    B.      Cousineau’s Qualifications
    Cousineau graduated from Clovis West High School in 1988 and graduated from
    California State University, Fresno in 1993 with a degree in environmental health
    14.
    science, with an emphasis in occupational health. Later, he obtained a master’s degree in
    public health, with an emphasis in environmental health science, from California State
    University, Fresno. Cousineau is registered by the California Department of Public
    Health as an environmental health specialist.
    After Cousineau obtained his undergraduate degree, he worked for the Fresno
    Metropolitan Flood Control District as an environmental resources technician for a few
    years and was promoted to a staff analyst position. He implemented provisions of the
    Clean Water Act (33 U.S.C. § 1251 et seq.) that require “municipalities, construction
    sites, and Caltrans to adhere to certain rules and regulations pertaining to storm water
    runoff from their properties.” His work involved rainwater runoff along roadways and
    included “[h]ow water moves, how it is conveyed, where it is transported to,” and the
    results of water movement.
    After seven years with the Fresno Metropolitan Flood Control District, Cousineau
    worked five years for the California Department of Transportation (Caltrans) as the
    District 6 (Fresno area) storm water coordinator. In that capacity, he was responsible for
    developing specifications and plans for Caltrans construction sites, ensuring the
    specifications and plans were adhered to during construction, and ensuring they also were
    adhered to after construction (Caltrans calls postconstruction the maintenance period).
    Construction sites have disturbed soil, which is highly erodible and can be transported by
    rainfall into water bodies. The purpose of the federal legislation is to prevent that from
    occurring by ensuring construction sites implement effective erosion control and
    sediment migration practices.
    Cousineau also took training courses related to construction site erosion control,
    coast construction site erosion, and roadway maintenance. The courses were given by the
    International Road Federation, Caltrans’ headquarters, and Caltrans department of storm
    water management. Cousineau testified that these courses taught him part of what he
    knows about erosion.
    15.
    After his time at Caltrans, Cousineau went to work for the State Center
    Community College District. When he testified, Cousineau was the director of
    environmental health and risk management for the district and had 24 and a half years of
    experience.
    Here we consider the question of whether Cousineau’s testimony was sufficient to
    establish he was qualified as an expert on the subject of erosion, erosion control, and
    sedimentation. (Evid. Code, § 720, subd. (a).) To qualify as an expert, the witness must
    be shown to have “special knowledge, skill, experience, training, or education” about the
    subject on which expert testimony is offered. (Ibid.) The expertise of a witness is
    relative to the subject and is not subject to rigid classification based on formal education
    or certification. (ABM Industries Overtime Cases (2017) 
    19 Cal.App.5th 277
    , 294.)
    Thus, “no hard and fast rule can be laid down” for determining whether a witness has
    special knowledge, skill, experience, training, or education in the field such that his or her
    testimony would be likely to assist the jury in the search for the truth. (Brown v. Colm,
    supra, 11 Cal.3d at p. 645.) Consequently, whether a witness is qualified to testify as an
    expert must be judged on the facts of that particular case. (Ibid.)
    We conclude Cousineau’s own testimony provided an adequate basis for the trial
    court to determine he had special knowledge, experience, and training related to the
    subject of erosion, erosion control, and sedimentation. (See Evid. Code, § 720,
    subds. (a), (b).) Thus, the trial court did not abuse its discretion in concluding Cousineau
    qualified to testify as an expert about how the sand bar was formed through the process of
    erosion and the timing of its formation.
    C.     Factual Basis for the Opinion
    Next, we consider whether Cousineau’s opinions were purely conclusory or,
    alternatively, were accompanied by a reasoned explanation of connecting the factual
    predicates with his ultimate conclusions about how and when the sand bar formed.
    16.
    Cousineau testified that the materials he reviewed in forming his opinions included
    (1) the deposition testimony of plaintiffs, David Bookwalter, Rick Dowell, 4 Carl Hall,
    Kent Johnson, Justice Jones, Tou Pha, Mark Updegraff, and Cory Walczak; (2) his
    deposition testimony; (3) weather data for the Fresno Air Terminal from the National
    Weather Service for the months of February through March 2017; (4) weather data from
    the National Oceanic and Atmospheric Association (NOAA) from the Auberry weather
    station for the months of October 2016 through April 2017; (5) the traffic collision report
    prepared by the CHP; (6) photographs from the accident scene; and (7) data from his
    bicycle’s computer.
    County contends these materials provide no evidentiary support for Cousineau’s
    opinions and, “therefore, his conclusions and opinions are based on nothing but
    speculation.” In particular, County states “Cousineau had not done any calculations,
    reviewed no plans of the roadway, performed no studies, and took no samples.” County
    notes that Cousineau is not an engineer, never did any engineering calculations for his
    estimates, never determined how long the drainage area was, and did not know the
    volume of water that would be necessary to move the material into position.
    First, County correctly notes that Cousineau was not an engineer. This fact,
    however, goes to his qualification as an expert and not the factual predicates for his
    opinion. We have already concluded that the trial court did not abuse its discretion in
    determining Cousineau qualified as an expert. (See pt. I.B., ante.) In other words, the
    fact Cousineau was not an engineer does not establish his opinions were “unaccompanied
    by a reasoned explanation connecting the factual predicates to the ultimate conclusion.”
    (Jennings, supra, 114 Cal.App.4th at p. 1117.)
    4      Bookwalter was the road maintenance supervisor for Area 11. Dowell was the fire
    captain in charge of the fire crew at the accident scene.
    17.
    Second, County’s argument about the lack of engineering calculations and the fact
    Cousineau performed no studies and took no samples implies these are necessary factual
    predicates for an opinion about how and when the sand bar formed. County has cited,
    and we have located, no authority for the principle that an opinion about erosion and
    sediment is reasonably explained only when supported by engineering calculations,
    studies or soil samples. Consequently, this argument does not establish that Cousineau’s
    opinions were unaccompanied by a reasoned explanation connecting the factual
    predicates to his ultimate conclusion. (Jennings, supra, 114 Cal.App.4th at p. 1117.)
    Lastly, we look at Cousineau’s explanation for his opinion and determine whether
    his opinions were conclusory or, alternatively, were supported by the evidence. The
    evidence relied upon by Cousineau included his personal observations of the area on the
    day of the accident and his review of the CHP photographs. The photographs showed the
    type of soil and vegetation on the shoulder of Auberry Road next to the bike lane and the
    ground that slopes upward from the shoulder. That soil was higher than the bicycle lane,
    which is demonstrated by the photographs and is supported by the testimony that the
    four-inch asphalt berm separating the bike lane from the shoulder was covered by the
    sand bar. The photographs also demonstrate that the material forming the sand bar was
    wet. After Hall and the CHP officer removed the sand bar from the bike lane, the
    photograph clearly shows the area where the sand bar was widest was a darker color,
    indicating the sand was moist in that area, which supports the inference that the sand was
    moved there by water. As for the timing of the formation of the sand bar, Cousineau
    explained this conclusion by referring to rainfall data for the Fresno airport and Auberry
    weather station for the time preceding the accident.
    We conclude Cousineau’s opinions about how and when the sand bar formed in
    the bike lane were not “purely conclusory” as that term was used in Jennings, supra,
    114 Cal.App.4th at page 1117. In other words, his opinions did not “rest on guess,
    surmise or conjecture.” (Ibid.) Instead, Cousineau provided a reasoned explanation of
    18.
    the factual basis for his opinions, which allowed the jury to evaluate the merits of his
    opinions. As a result, the jury was informed how the facts, including the amount and
    timing of rainfall in the area, could support his conclusions. Thus, the jury was equipped
    to “decide whether it [was] more probable than not that the facts do support the
    conclusion urged by [Cousineau].” (Ibid.)
    Consequently, we conclude the trial court properly determined “the matter relied
    on can provide a reasonable basis for [Cousineau’s] opinion.” (Sargon, supra, 55 Cal.4th
    at p. 772.) Therefore, the court did not abuse its discretion when it admitted Cousineau’s
    opinion testimony.
    II.    DANGEROUS CONDITION OF PUBLIC PROPERTY
    A.     General Legal Principles
    The Government Claims Act (§ 810 et seq.) is a comprehensive statute that defines
    the liabilities and immunities of public entities and public employees for torts. (Cordova
    v. City of Los Angeles (2015) 
    61 Cal.4th 1099
    , 1104–1105.) One type of liability is for
    injuries caused by a dangerous condition of public property.
    Section 835 sets forth the exclusive conditions under which a public entity is liable
    for injuries caused by a dangerous condition of public property. It provides in relevant
    part: “Except as provided by statute, a public entity is liable for injury caused by a
    dangerous condition of its property if the plaintiff establishes [1] that the property was in
    a dangerous condition at the time of the injury, [2] that the injury was proximately caused
    by the dangerous condition, [3] that the dangerous condition created a reasonably
    foreseeable risk of the kind of injury which was incurred, and that [4] … [¶] … [¶] [t]he
    public entity had actual or constructive notice of the dangerous condition under Section
    835.2 a sufficient time prior to the injury to have taken measures to protect against the
    dangerous condition.” (§ 835, italics added.) The italicized terms are defined by statute.
    19.
    “ ‘Protect against’ includes repairing, remedying or correcting a dangerous
    condition, providing safeguards against a dangerous condition, or warning of a dangerous
    condition.” (§ 830, subd. (b).) “ ‘Dangerous condition’ means a condition of property
    that creates a substantial (as distinguished from a minor, trivial or insignificant) risk of
    injury when such property or adjacent property is used with due care in a manner in
    which it is reasonably foreseeable that it will be used.” (Id., subd. (a).) Conversely, “[a]
    condition is not a dangerous condition within the meaning of this chapter if the trial or
    appellate court, viewing the evidence most favorably to the plaintiff, determines as a
    matter of law that the risk created by the condition was of such a minor, trivial or
    insignificant nature in view of the surrounding circumstances that no reasonable person
    would conclude that the condition created a substantial risk of injury when such property
    or adjacent property was used with due care in a manner in which it was reasonably
    foreseeable that it would be used.” (§ 830.2.) For example, the state’s failure to erect
    median barriers to prevent cross-median accidents might constitute a dangerous condition
    that results in liability. (Cornette v. Department of Transportation (2001) 
    26 Cal.4th 63
    ,
    68.)
    The purpose of section 835 and the related provisions is “to impose liability only
    when there is a substantial danger which is not apparent to those using the property in a
    reasonably foreseeable manner with due care.” (Fredette v. City of Long Beach (1986)
    
    187 Cal.App.3d 122
    , 131 (Fredette).) Thus, while “it is foreseeable that persons may use
    public property without due care, a public entity may not be held liable for failing to take
    precautions to protect such persons.” (Id. at p. 132.)
    In addition, “[r]easonably foreseeable use with due care, as an element in defining
    whether property is in a dangerous condition, refers to use by the public generally, not the
    contributory negligence of the particular plaintiff.” (Mathews v. City of Cerritos (1992)
    
    2 Cal.App.4th 1380
    , 1384 (Mathews).) A particular plaintiff’s contributory negligence is
    20.
    a matter of defense and has no bearing on whether a dangerous condition existed in the
    first instance. (Ibid.; Fredette, supra, 187 Cal.App.3d at p. 131.)
    Generally, whether a given set of circumstances constitutes a dangerous condition
    poses a question of fact. (Biscotti v. Yuba City Unified School Dist. (2007) 
    158 Cal.App.4th 554
    , 558 (Biscotti).) However, the issue may be decided as a matter of law
    if no reasonable person could conclude the property’s condition is dangerous under the
    statutory definition. (Id. at p. 559.) The plaintiff has the burden of proving a dangerous
    condition existed. (Ibid.)
    Several judicial decisions have concluded that an apparent hazard was not a
    dangerous condition for purposes of section 835. In Fredette, the plaintiff was seriously
    injured when he dove off a pier into a shallow lagoon. The appellate court affirmed the
    jury’s verdict in favor of the defendant city because the danger of diving from the pier
    was apparent, and “no reasonable person could conclude that a swimmer, exercising due
    care and confronted with the notice that the condition itself provided, would have used
    the pier as a diving platform.” (Fredette, supra, 187 Cal.App.3d at p. 132.)
    In Schonfeldt v. State of California (1998) 
    61 Cal.App.4th 1462
    , the appellate
    court upheld a judgment on the pleadings in favor of the defendant state. The injured
    teenager, who was struck by a truck after climbing a freeway fence and running across
    the freeway, used the freeway “without due care in a manner which is not reasonably
    foreseeable.” (Id. at p. 1464.)
    In Mathews, a child tried to ride his bike down a steep and slippery hill in a public
    park and crashed into a block wall. The court upheld summary judgment for the city
    because “the danger of riding a bicycle down a very steep, wet, grassy hill is obvious
    from the appearance of the property itself, even to children exercising a lower standard of
    due care.” (Mathews, supra, 2 Cal.App.4th at p. 1385.)
    In Biscotti, a nine-year-old boy used a chain link fence to prop his bicycle against
    and then stood on the bicycle to pick oranges. (Biscotti, supra, 158 Cal.App.4th at
    21.
    p. 557.) The bicycle slipped when the boy was leaning over the fence; he fell onto the
    fence and was cut. (Ibid.) The trial court granted summary judgment to the defendant
    school district. (Id. at p. 556.) The appellate court affirmed the summary judgment
    because the boy did not use the fence with due care in a reasonably foreseeable manner.
    (Id. at p. 557.) Not only was use of the fence in that manner not reasonably foreseeable,
    any reasonable person using the fence as a prop would have appreciated the readily
    apparent danger. (Id. at pp. 560–561.)
    B.     Reasonably Foreseeable Use with Due Care
    1.     Contentions
    County’s motions for directed verdict and for judgment notwithstanding the
    verdict contended that, as a matter of law, there was no dangerous condition as that term
    is defined in section 830 because the evidence was undisputed as to the obviousness of
    the hazard. More specifically, County argues that “the evidence clearly establishes that
    no reasonable person would consider that the sand posed a substantial risk of injury when
    the property is used with due care in a reasonabl[y] foreseeable manner.” In County’s
    view, riding through an obvious sand obstruction does not constitute an exercise of due
    care.
    Plaintiffs contend the issue of whether the sand bar in the bike lane created a
    dangerous condition cannot be resolved as a matter of law because there was evidence
    that it posed a substantial risk of harm to reasonably foreseeable users exercising due
    care. Plaintiffs refer to the testimony of County employees and the testimony of the other
    cyclists who were riding in the paceline.
    In reply, “County asserts that the evidence presented clearly establishes that no
    reasonable person would consider that the sand posed a substantial risk of injury when
    the property is used with due care in a reasonabl[y] foreseeable manner as a matter of
    law.” County argues the evidence referred to by plaintiffs go to comparative negligence
    22.
    and there is only one reasonable conclusion—namely, that the sand was an obvious
    danger and a cyclist using reasonable care would not ride through it. In County’s view, a
    reasonable cyclist exercising due care would navigate around the sand or stop.
    2.     Reasonably Foreseeable Users
    Initially, we consider who are the reasonably foreseeable users of the bike lane on
    Auberry Road. (See § 830, subd. (a) [definition of dangerous condition].) We undertake
    this inquiry because “[r]easonably foreseeable use with due care … refers to use by the
    public generally.” (Mathews, supra, 2 Cal.App.4th at p. 1384; see Fredette, supra,
    187 Cal.App.3d at p. 132 [court considered whether there was a “substantial risk of injury
    to any foreseeable user of the property exercising due care”].)
    The evidence of foreseeable use by the public generally includes Section D of the
    transportation and circulation element of the Fresno County General Plan. That section
    recognizes bicycles are “a means of recreation, transportation, and healthful exercise.”
    The stated goal of Section D is to “provide a safe, continuous, and easily accessible
    bikeway system that facilitates the use of the bicycle as a viable alternative transportation
    mode and as a form of recreation and exercise.” Based on these provisions and the goals
    and policies of the Regional Bikeway Plan quoted earlier, we conclude the reasonably
    foreseeable users of the bike lane include (1) cyclists using it for transportation purposes
    and (2) cyclists engaging in recreation, exercise, or a combination of the two. As to the
    latter category, the testimony establishes that riding in a paceline is common. Therefore,
    we conclude it was reasonably foreseeable that cyclists using the bike lane would include
    groups of people riding in a paceline.
    Another aspect of using the bike lane in a manner that “is reasonably foreseeable”
    (§ 830, subd. (a)) involves the weather and the time of day when the cycling is done.
    County asserts “weather was not an issue in seeing the sand in the bike lane as it was
    daylight, the weather was partly cloudy and the surface of the road was dry.” County’s
    23.
    assertion, coupled with its failure to address other conditions, implies that these are the
    only conditions in which use of the bike lane is reasonably foreseeable, done with due
    care, or both. We reject this implication. First, the testimony shows that recreational
    night riding occurs. Second, it is reasonable to infer from the evidence that some cyclists,
    particularly commuters, will not always have clear, dry conditions in full daylight every
    time they use the bike lane.
    Accordingly, we conclude it was reasonably foreseeable that members of the
    general public would use the bike lane in a variety of conditions. Some of those varying
    conditions would affect the visibility of the sand bar and, thus, the point at which a rider
    exercising due care would be able to determine the need to leave the bike lane to avoid
    the sand. In reaching these conclusions, we have adhered to the statutory directive that
    appellate courts “view[] the evidence most favorably to the plaintiff” when determining
    whether the risk to foreseeable users created by the condition was minor, trivial or
    insignificant as a matter of law. (§ 830.2.)
    3.     Risk of Use with Due Care
    County’s argument about use with due care asserts that a cyclist approaching the
    sand bar has two reasonable courses of action—either stopping or navigating around the
    sand by entering the roadway. County supports this argument by referring to the cyclists
    in the paceline who successfully chose one of these options, rather than the broader
    category of any reasonably foreseeable user.
    The option of leaving the bike lane and merging into the roadway and the risks
    associated with that option were addressed in the testimony. Cousineau stated that the
    purpose of a bike lane is to separate bicycle traffic from motor vehicle traffic and, when a
    bike lane is blocked, cyclists are forced into the roadway and the two types of traffic are
    commingled. Medrano testified the sand bar “was a dangerous situation” that cyclists
    could circumvent by leaving the bike lane, “but there was a hazard of traffic.”
    24.
    In general terms, a hazard that blocks a bike lane increases the risk of injury to
    bicyclists because merging into the roadway involves intermingling with motor vehicles
    traveling at a much greater speed than the bicyclists. The longer the blockage, the longer
    traffic is intermingled, and the longer bicyclists are subject to the risk that intermingling
    creates. Also, the risk of intermingling may be greater where the particular Class II bike
    lane is clearly marked and has been in use for two decades. In such a situation, both
    drivers and bicyclists expect to be separated and may act in a way that relies on that
    separation. Thus, a trier of fact evaluating the risks of the bike lane blockage could
    reasonably find that drivers of vehicles are less likely to anticipate having to safely
    intermingle with bicycle traffic than drivers on roads without a bike lane. 5
    With this background about the general use of bike lanes and the risks associated
    with blocking a bike lane, we turn to the sand bar that blocked the bike lane on Auberry
    Road. In Fredette, the court considered whether “the configuration of the lagoon at the
    time of the accident posed a substantial risk of injury to any foreseeable user of the
    property exercising due care.” (Fredette, supra, 187 Cal.App.3d at p. 132.) Here, we
    consider whether the configuration of the roadway, bike lane, and sand bar at the time of
    the accident posed a substantial risk of injury to any foreseeable user of the property
    exercising due care. This evaluation addresses whether the dangers “were apparent to all
    users.” (Ibid.)
    The roadway, bike lane and sand bar are shown in the CHP photographs admitted
    into evidence. Photographs taken from the direction of bicyclists approaching the sand
    5       In Mittenhuber v. City of Redondo Beach (1983) 
    142 Cal.App.3d 1
    , the appellate
    court affirmed a judgment of dismissal entered after a demurrer was sustained to the
    bicyclist’s claim that an intersection was dangerous. The court stated: “Many of the
    streets and highways of this state are heavily used by motorists and bicyclists alike.
    However, the heavy use of any given paved road alone does not invoke the application of
    Government Code section 835.” (Id. at p. 7, italics added.) In this case, plaintiffs do not
    claim that heavy, intermingled use of the roadway, by itself, constituted a dangerous
    condition.
    25.
    bar show the width of the sand gradually increasing and, thus, narrowing the portion of
    the bike lane useable by cyclists. The photographs also show that the white stripe
    marking the bike lane is fully visible—that is, it is not covered by sand. Had the white
    stripe been covered, approaching riders could have easily seen they had to move into the
    traffic lane because they could not ride between the white line and the sand.
    Cousineau testified that the sand bar was tapered—that is, it was “a very thin line
    against the gutter and then gradually and then very quickly filled up the entire bike lane.”
    Cousineau was asked:
    “Did it appear to you as you approached the sandpile, before the moment
    you’re describing where you realized that the sand tapered all the way out
    to the white stripe, where you were under the impression you might be able
    to safely navigate around it staying within the bike lane?”
    Cousineau answered that he first thought it would be fine, but very quickly the
    entire bike lane was filled with sand and it was not an insignificant depth. Cousineau
    then recognized that it was an immediate hazard—that is, something his road bike could
    not traverse safely—and that is when he decided to move around it.
    Based on the photographs and testimony, a trier of fact could reasonably find that
    a cyclist in the middle of a paceline approaching the sand with due care would not be
    given a clear indication that it was necessary to leave the bike line to avoid the sand until
    the rider was very close to the widest part of the sand bar. Similarly, a trier of fact could
    reasonably find that a motorist overtaking a paceline with due care would have his or her
    vision of the sand bar obstructed by the paceline and would not be able see that the
    cyclists would be squeezed into merging into the roadway until they made that maneuver.
    Based on the surrounding circumstances, we cannot conclude as a matter of law
    that the risk created by the sand bar for bicyclists, which includes the unexpected
    intermingling of traffic, was trivial or insignificant when the roadway and bike line were
    used with due care by motorists and bicyclists. We recognize the random nature of the
    risk created by the bicyclist being forced to merge into the roadway. Not every paceline
    26.
    would reach the widest part of the sand bar when being overtaken by a motorist and
    fewer would be overtaken when there also is a vehicle in the southbound lane of traffic,
    which prevent the vehicle overtaking the paceline from moving across the centerline to
    give the bicyclists more room. The randomness of these events does not render the risk
    unforeseeable as a matter of law. Therefore, we conclude the trial court properly
    determined the issue presented a question of fact for the jury to decide. (See § 830.2.)
    In closing our analysis, we note part of County’s argument about the obviousness
    of the hazard created by the sand bar is premised on the assertion that a reasonable road
    bicyclist needs to “avoid any amount of sand on the roadway.” We cannot accept the
    premise that any amount of sand is an obvious hazard because the record contains
    evidence that bicyclists can ride over some amounts of sand without unreasonably
    increasing the risk of a fall. For example, Medrano testified that he had encountered
    shovel fulls of sand that are short and “if you ride through them, you’re okay.” Also,
    Cousineau testified that “small amounts as shallow as half an inch or so could cause you
    to lose control of your bicycle if it’s in the roadway.” His testimony supports the
    inference that sand less than half an inch deep is unlikely to cause a loss of control.
    Braun, County’s expert, did not give an unqualified opinion a little sand can cause a rider
    to fall. Instead, he stated it depended “on speed, steering and braking inputs.” Because
    of the conflicting evidence about whether a bicyclist could not perceive the depth of the
    sand near the bike lane’s stripe until they were close to it, it was not obvious, as a matter
    of law, to all reasonably foreseeable users exercising due care that they could not ride
    along the edge of the sand just inside the bike lane’s white stripe.
    III.   PRIMARY ASSUMPTION OF RISK
    A.     The Duty of Care Element
    Under California tort law, the elements of a negligence claim and a premises
    liability claim are the same: a legal duty of care, breach of that duty, and an injury
    27.
    proximately caused by that breach. (Kesner v. Superior Court (2016) 
    1 Cal.5th 1132
    ,
    1158.) California’s doctrine of primary assumption of risk addresses the duty of care
    element—specifically, it limits the duty owed by the defendant to prospective plaintiffs.
    (Williams v. County of Sonoma (2020) 
    55 Cal.App.5th 125
    , 128 (Williams).) In the
    sporting context, the doctrine precludes liability for injuries arising from those risks
    deemed inherent in a sport. (Id. at p. 129.) Thus, as a general rule, a person or entity has
    no legal duty to eliminate a sport’s inherent risks or otherwise protect a sports participant
    from those risks. (Ibid.) Nonetheless, California law recognizes a limited duty to sports
    participants—namely, a duty “ ‘not to unreasonably increase the risks of injury beyond
    those inherent in the activity.’ ” (Ibid., quoting Nalwa v. Cedar Fair, L.P. (2012)
    
    55 Cal.4th 1148
    , 1162 (Nalwa).)
    The doctrine reflects a policy determination that certain defendants should not be
    responsible for protecting potential plaintiffs from particular harms. (Williams, supra,
    55 Cal.App.5th at pp. 128–129.) The public policy for applying the primary assumption
    of risk doctrine in the sporting context is “to avoid chilling vigorous participation in or
    sponsorship of recreational activities by imposing a tort duty to eliminate or reduce the
    risks of harm inherent in those activities.” (Nalwa, supra, 55 Cal.4th at p. 1156.)
    B.     Trial Court Proceedings
    1.     Motions
    County’s motion for nonsuit argued County had no duty to protect plaintiff from
    the risks inherent in road cycling in a paceline where the risk cannot be eliminated
    without altering the fundamental nature of the activity and, therefore, the issue presented
    was “whether [County’s] conduct substantially or unreasonably increased the inherent
    risk of the activity.” In arguing the motion, County recognized that whether its conduct
    increased the risks inherent in the activity was a factual question and argued that “when
    the facts are not in dispute and no reasonable juror could find otherwise, a nonsuit is
    28.
    appropriate.” The trial court determined the application of the primary assumption of risk
    doctrine to the facts of this case presented questions of fact for the jury. As a result, the
    court denied County’s motion for nonsuit.
    County’s motion for directed verdict again raised the primary assumption of risk
    issue. The trial court stated: “Primary assumption of the risk applies in this case.
    However, there are disputed facts on whether or not the County has increased that risk,
    the inherent risk.” Defense counsel then asked what facts were in dispute because there
    was no dispute that there was sand in the bike lane. The court agreed it was undisputed
    that sand was in the bike lane, “but there is dispute about the nature of the sand, the
    amount of sand” and whether it was beyond what is an inherent risk in bicycling.
    Defense counsel argued hazards are on the roadway every time a cyclist rides a bike,
    those objects are avoided all the time, and every object exposes cyclists to the risk of
    falling, and “[s]ize doesn’t increase the risk. The risk was there.” Rose’s counsel argued
    the size of the sand bar does change the amount of risk and there was “no good argument
    that a sand pile that’s this deep and this large is an inherent risk of riding your bicycle on
    the roadway.” After hearing argument, the court restated its conclusion that whether the
    inherent risk was increased presented a question of fact for the jury.
    2.      Jury Instructions and Findings
    Based on CACI No. 472, the trial court instructed the jury on the primary
    assumption of risk doctrine as follows:
    “Melissa Rose and David Bray claim that they were harmed while
    participating in road bicycling on a roadway controlled and maintained by
    the County of Fresno. To establish this claim, Melissa Rose and David
    Bray must prove all of the following:
    “One, that the County of Fresno controlled and maintained the
    roadway;
    29.
    “Two, that the County of Fresno unreasonably increased the risks to
    Melissa Rose and David Bray over and above those inherent in road
    bicycling;
    “Three, that Melissa Rose and David Bray were harmed; and,
    “Four, that the County of Fresno’s conduct was a substantial factor
    in causing harm to Melissa Rose and David Bray.”
    The parties agreed to this version of the instruction. The parties had disputed the
    use of a prior version containing (1) the words “in a pace line” after the two references to
    “road bicycling” and (2) a different wording of the first element.
    The special verdict form asked whether the County did “something or fail[ed] to
    do something that unreasonably increased the risks to [plaintiffs] over and above those
    inherent in road cycling.” The jury answered, “Yes.” The vote was eleven to one. In
    addition, the jury answered “No” when asked: “When you consider the likelihood and
    seriousness of potential injury, compared with (a) how much time and opportunity
    COUNTY OF FRESNO had to take action, and (b) the practicality and cost of protecting
    against the risk of injury, was COUNTY OF FRESNO’S failure to take sufficient steps to
    protect against the risk of injury created by the dangerous condition reasonable under the
    circumstances?”
    C.     Proof an Inherent Risk Was Increased
    To reiterate, County argues that there is no evidence it increased the risk of harm
    to bicyclists riding in a paceline. County asserts that obstacles in the roadway and bike
    lane, including sand, are recognized hazards of road cycling and the risks posed by such
    obstacles are part of the risks inherent in road cycling.
    1.     Background
    To reach the issue about whether an inherent risk was unreasonably increased, we
    make the same two assumptions made by the First District in Williams. First, the primary
    assumption of risk doctrine applies to claims against public entities for injuries caused by
    a dangerous condition of public property. (Williams, supra, 55 Cal.App.5th at p. 130.)
    30.
    Second, the group bicycle ride in which Rose and Bray participated constitutes a type of
    sports activity covered by the primary assumption of risk doctrine. (Ibid.)
    We note Williams also discussed a third legal issue—whether the county owed the
    bicyclist the limited duty not to unreasonably increase the inherent risks of that sporting
    activity. (Williams, supra, 55 Cal.App.5th at p. 130.) That issue was raised by the
    county’s argument that it had no role in cycling and no relationship to the plaintiff and,
    therefore, “it owe[d] no duty to avoid unreasonably increasing the inherent risks of her
    cycling activity.” (Id. at p. 131.) The First District rejected this argument after analyzing
    whether imposing the limited duty would promote or undermine the policy goals of the
    primary assumption of risk doctrine. (Id. at pp. 130–133.) In this appeal, County has not
    raised the issue and, therefore, we conclude County owed the plaintiffs the limited duty
    not to unreasonably increase the inherent risks of road cycling. In other words, the trial
    court’s jury instruction on the primary assumption of risk correctly stated the law.
    2.     The Concept of an Inherent Risk
    Our analysis of County’s argument is divided into two parts. The first addresses
    the concept of a sporting activity’s inherent risk. We regard this issue as a question of
    law about the scope of the limited duty.
    County’s briefing asks: “If small amounts of sand in a bike lane is a hazard to
    cyclists, as the witnesses testified, why does the size and depth of the sand mean the
    County increased the risk? It would seem that sand in the bike lane is an inherent risk of
    long-distance recreational cycling and as a matter of law the size of the obstacle nor its
    depth changes that fundamental premise, particularly when cyclists can lawfully enter the
    drive lane to avoid the sand.” County reiterated its contention, stating: “The presence of
    ‘more’ sand does not increase the risk and no affirmative act on the part of County
    increased the risk to [plaintiffs].” County’s argument seems to imply that (1) increasing
    31.
    the risks inherent in a recreational activity means not adding a new risk and (2) obstacles
    and related falls are not a new risk for bicyclists.
    In Williams, the court addressed whether the county breached its duty not to
    increase the inherent risks of long-distance, recreational cycling by failing to repair the
    pothole that caused plaintiff’s fall. (Williams, supra, 55 Cal.App.5th at p. 133.) The
    county argued that falling and obstacles in the road were inherent risks of long-distance,
    recreational cycling and appeared to contend that all obstacles and related falls are
    inherent risks of the activity. (Id. at pp. 133–134.) The court rejected this argument,
    stating:
    “As explained in Solis v. Kirkwood Resort Co. (2001) 
    94 Cal.App.4th 354
    ,
    365, even though ‘falling off a horse is an inherent risk of horseback
    riding[,] … if a person put a barrel in the middle of the Churchill Downs
    racetrack, causing a collision and fall, we would not say that person owed
    no duty to the injured riders, because falling is an inherent risk of horseback
    riding.’ (Accord, Jimenez v. Roseville City School Dist. (2016) 
    247 Cal.App.4th 594
    , 610 [‘We accept that unwanted contact with the floor is
    an inherent risk of any kind of dancing, because as a matter of common
    experience any dancer may slip, or dancers may collide, causing a fall.
    [Citations.] But that does not mean every time a dancer contacts the floor,
    it is because of an inherent risk of dancing.’]; Yancey v. Superior Court
    (1994) 
    28 Cal.App.4th 558
    , 565 [‘The discus, by its nature, involves
    launching a dangerous projectile. In the general sense, anyone within the
    area … is subject to some risk of being struck by the thrown discus. But …
    is the careless conduct of a participant in throwing the discus without first
    ascertaining the target area is clear an inherent risk of the sport? We think
    not.’].) By the same reasoning, a pothole so large as to ‘pose a hazard to …
    [a]nything on the roadway’ is a road obstacle, but is not an inherent risk of
    long-distance, recreational cycling.” (Williams, supra, 55 Cal.App.5th at
    p. 134.)
    Thus, the First District rejected the suggestion “that every road obstacle is an
    inherent risk of long-distance cycling.” (Williams, supra, 55 Cal.App.5th at p. 134.) We
    join this legal conclusion and reject the argument that every obstacle is an inherent risk of
    road bicycling. As a result, while obstacles, including sand, in a bike lane are an inherent
    risk of long-distance, recreational cycling, we reject County’s suggestion that sand in a
    32.
    bike lane, regardless of the quantity present, never increases the inherent risk of a
    bicyclist falling. Stated from another perspective, we conclude falling because of sand is
    an inherent risk in road bicycling that can be unreasonably increased.
    3.      Evidence of a Breach of the Limited Duty
    The second part of our analysis addresses County’s argument about the sufficiency
    of the evidence. Under the basic principles that define tort liability and the primary
    assumption of risk doctrine, the existence of a duty and whether that duty was breached
    are separate elements. Our inquiry into the sufficiency of the evidence does not address
    the scope of the limited duty not to increase inherent risks. Instead, it considers whether
    a breach occurred because County unreasonably increased the inherent risk of road
    bicycling.
    The parties recognize that there is a split of authority on whether a breach of the
    limited duty not to increase the inherent risks of a recreational activity presents a question
    of law or fact. “Some courts have held the jury decides whether the defendant’s conduct
    increased the inherent risks of a sport. [Citations.] [¶] Other courts … have concluded
    that because the primary assumption of the risk doctrine involves issues of duty, the trial
    court determines both prongs of the duty analysis.” (Huff v. Wilkins (2006) 
    138 Cal.App.4th 732
    , 745; see Williams, supra, 55 Cal.App.5th at p. 134.) This split in
    authority is not important for purposes of this appeal because the parties and trial court
    agreed that a question of fact was presented in this case. County’s reply brief states it
    “did not disagree that, despite the split of authority, the issue of increasing the risk of
    falling beyond that inherent in the activity is a question of fact.” County also asserted:
    “This does not change the standard regarding a nonsuit or directed verdict as detailed in
    County’s opening brief that the issue can be decided as a matter of law when no other
    reasonable conclusion is legally deducible from the evidence.” Accordingly, we consider
    whether the factual question of whether County unreasonably increased the risk of a
    33.
    bicyclist falling beyond that inherent in road bicycling can be decided in County’s favor
    as a matter of law. Stated from the opposite point of view, does substantial evidence
    support the jury’s factual finding that the sand bar in the bike lane unreasonably increased
    the risks inherent in road bicycling.
    Initially, we note that the issue of an unreasonable increase in an inherent risk is
    related to the question of whether there was a dangerous condition of public property. In
    Zelig v. County of Los Angeles (2002) 
    27 Cal.4th 1112
    , the Supreme Court stated: “ ‘If
    the risk of injury from third parties is in no way increased or intensified by any condition
    of the public property … courts ordinarily decline to ascribe the resulting injury to a
    dangerous condition of the property.’ ” (Id. at p. 1137, italics added.) Here, the
    dangerous condition created by the sand bar increased the risks of intermingling with
    vehicular traffic and falling because it blocked the bike lane and put bicyclists in the
    position of having to merge into traffic to avoid the sand or ride over the edge of the sand
    to avoid traffic. The jury’s determination that the increase in risk was unreasonable is
    supported by the length of time the hazard existed without being addressed (i.e., 27 days).
    Therefore, we cannot conclude as a matter of law that there was no unreasonable increase
    in the risks inherent in road bicycling.
    IV.    JURY INSTRUCTIONS ADDRESSING NEGLIGENCE PER SE
    “A party is entitled upon request to correct, nonargumentative instructions on
    every theory of the case advanced by him which is supported by substantial evidence.”
    (Soule v. General Motors Corp. (1994) 
    8 Cal.4th 548
    , 572.) The propriety of a proposed
    jury instruction is a question of law subject to de novo review on appeal. (Harb v. City of
    Bakersfield (2015) 
    233 Cal.App.4th 606
    , 617.) To obtain a reversal, an appellant must
    show an instructional error occurred and was prejudicial. (Ibid.; see Cal. Const., art. VI,
    § 13; Code Civ. Proc., § 475.)
    34.
    A.     Proposed Instruction
    County submitted a proposed jury instruction based on CACI No. 418, which
    addresses the presumption of negligence per se. The statutory provisions included in
    County’s proposed instruction were Vehicle Code sections 21200, 22107, 21208, and
    21760.
    Vehicle Code section 21200, subdivision (a)(1) states: “A person riding a bicycle
    or operating a pedicab upon a highway has all the rights and is subject to all the
    provisions applicable to the driver of a vehicle by this division.”
    Vehicle Code section 22107 provides: “No person shall turn a vehicle from a
    direct course or move right or left upon a roadway until such movement can be made
    with reasonable safety and then only after the giving of an appropriate signal in the
    manner provided in this chapter in the event any other vehicle may be affected by the
    movement.”
    The portion of Vehicle Code section 21208 quoted in County’s proposed
    instruction states: “(a) Whenever a bicycle lane has been established on a roadway
    pursuant to Section 21207, any person operating a bicycle upon the roadway at a speed
    less than the normal speed of traffic moving in the same direction at that time shall ride
    within the bicycle lane, except that the person may move out of the lane under any of the
    following situations: [¶] … [¶] (3) When reasonably necessary to leave the bicycle lane
    to avoid debris or other hazardous conditions.”6
    Vehicle Code section 21760 contains the Three Feet for Safety Act (Veh. Code,
    § 21760, subd. (a)), which sets forth requirements for drivers of a motor vehicle who,
    while driving on a highway, overtake a bicycle that is proceeding in the same direction.
    6       Subdivision (b) of Vehicle Code section 21208, which was not included in the
    proposed instruction, provides: “No person operating a bicycle shall leave a bicycle lane
    until the movement can be made with reasonable safety and then only after giving an
    appropriate signal in the manner provided in Chapter 6 (commencing with Section
    22100) in the event that any vehicle may be affected by the movement.”
    35.
    County’s opening brief does not assert the refusal to instruct on this section constituted
    error and, therefore, this opinion does not discuss this section other than to note it does
    not impose any requirements on bicyclists.
    After setting forth the Vehicle Code text, the proposed instruction stated: “If you
    decide [¶] 1. That Melissa Rose and/or David Bray violated any of these laws, and [¶]
    2. That the violation was a substantial factor in bringing about the harm, then you must
    find that Melissa Rose and/or David Bray was negligent unless you also find that the
    violation was excused. [¶] If you find that Melissa Rose and/or David Bray did not
    violate this law or that the violation was not a substantial factor in bringing about the
    harm, then you must still decide whether Melissa Rose and/or David Bray was negligent
    in light of the other instructions.”
    The trial court refused to give County’s proposed instruction based on CACI
    No. 418. In making a record of what occurred during the jury instruction conference held
    off the record, defense counsel stated:
    “As to 418, our position was and still is that Vehicle Code 21200(a)
    makes applicable code sections within that division. The division is Rules
    of the Road. Rules of the Road included Vehicle Code section 22107,
    21208(a)(3), and 21760. [¶] During our conference Your Honor
    mentioned this would not be given, and we also asked for permission to
    propose separate instructions to be read for each of these code sections, and
    that also was declined.”
    “So for our record then, we do note that the code sections relate to
    bicycle conduct under 21760. They do need to have a safe space, and they
    have to keep the same minimum space that vehicles do, 3 feet. Under
    21208(a)(3), they may leave the bike lane to avoid debris or other
    conditions, and when they fail to do so, they have not taken advantage of
    that code section.”
    “Under 22107, moving within a lane can be done only when done
    with reasonable safety. Given an appropriate signal, in the manner
    provided by this division of the Vehicle Code, the movements and
    directional travel of each of the Plaintiffs did not comply with that code
    section, and it does apply to bicyclists -- is our position.”
    36.
    On appeal, County contends the trial court erroneously refused to give
    “instructions requested by County as it pertains to Vehicle Code section[s] 21200, 21208
    and 22107.” County asserts “[i]t is for the jury to decide how the facts apply to the law,
    but this jury was not allowed to consider that because the law was never given” and,
    absent the law, the jury could not properly decide the case and reach a verdict.
    B.     Analysis
    We do not consider whether the trial court erred in refusing to give a negligence
    per se instruction because the County’s reply brief states County “is not making the
    argument as to negligence per se” but is arguing the trial court should have granted its
    request that the jury be instructed about the Vehicle Code provisions “separately from
    CACI 418.”
    Vehicle Code section 21208, subdivision (a) states that bicyclists “shall ride within
    the bicycle lane” and, when specified situations arise, the bicyclist “may move out of the
    lane.” County’s argument that the jury should have been instructed on this provision
    because the jury was ignorant of the law is not supported by the record. Officer Walczak
    was asked whether bicyclists are required to “always ride in the bike lane” and he
    answered, “[i]f there is one provided for them.” Next, Officer Walczak was asked
    whether bicyclists are “allowed to move outside the bike lane” and he answered, “Yes.”
    In a follow-up question, he was directed to turn to tab 443 in County’s trial notebook,
    which contained Vehicle Code section 21208, and was asked whether “this code section
    permit[s] bicyclists to move outside the bike lane if there is some condition in the bike
    lane.” He answered, “Yes.”
    Officer Walczak also testified that Vehicle Code section 21200 requires bicyclists
    “to adhere to the same laws as a motor vehicle” and he determined that Rose violated
    Vehicle Code section 22107, which prohibits unsafe turning movements. As a result of
    Officer Walczak’s testimony, the jury was aware that, under the Vehicle Code, a bicyclist
    37.
    is allowed to move out of the bike lane, bicyclists are subject to the general rules of the
    road contained in the Vehicle Code, and Officer Walczak believed Rose made an unsafe
    turning movement in violation of one of the rules of the road. Thus, County’s assertion
    that the jury was never given the law and, thus, “never had an opportunity to consider that
    … law of the state” was contradicted by the record.
    In addition, during his closing argument, defense counsel referred to Officer
    Walczak’s testimony and a Vehicle Code provision by stating: “Did the County require
    them to establish a certain path? No. [¶] Because the Vehicle Code, as we heard from
    Officer Walczak, allows cyclists to go outside the bike lane.”
    Based on the testimony and argument presented, we conclude the jury was aware
    of the law and, contrary to County’s opening brief, was not “left … without a proper legal
    basis to find that Rose and Bray should have moved into the roadway and that the County
    was not liable.” Also, the contention that County should not be liable because of a
    negligent failure to leave the bike lane makes little sense under California’s system of
    comparative fault. (See generally, Li v. Yellow Cab Co. (1975) 
    13 Cal.3d 804
    .)
    Negligence by plaintiffs does not automatically lead to the conclusion that the defendant
    public entity has no liability for a dangerous condition of public property. (See Fredette,
    supra, 187 Cal.App.3d at p. 131 [plaintiff’s contributory negligence is a matter of defense
    and has no bearing on whether a dangerous condition existed in the first instance].)
    As a court of review, we infer the jury evaluated the argument rather than ignoring
    it. Stated from another perspective, County has cited nothing in the record to support the
    inference that the jury ignored the testimony of Officer Walczak and the argument of
    defense counsel. (See generally, Denham v. Superior Court (1970) 
    2 Cal.3d 557
    , 564
    [judgment is presumed correct and appellant must affirmatively demonstrate prejudicial
    error].)
    Finally, we conclude County has failed to demonstrate the purported instructional
    error resulted in prejudice. The jury was aware of the Vehicle Code provisions and,
    38.
    therefore, it is not a reasonable probability that a jury instruction repeating information
    the jury already had would have resulted in a verdict more favorable to County. (See
    Soule v. General Motors Corp., 
    supra, 8
     Cal.4th at p. 574 [test for prejudice].)
    DISPOSITION
    The judgment is affirmed. Respondents shall recover their costs on appeal.
    DE SANTOS, J.
    WE CONCUR:
    PEÑA, ACTING P. J.
    MEEHAN, J.
    39.