David Keenan Brown v. Commonwealth of Virginia ( 2022 )


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  •                                              COURT OF APPEALS OF VIRGINIA
    Present: Judges Huff, O’Brien and White
    UNPUBLISHED
    Argued at Norfolk, Virginia
    DAVID KEENAN BROWN
    MEMORANDUM OPINION*
    v.     Record No. 1021-21-1                                     BY JUDGE GLEN A. HUFF
    DECEMBER 13, 2022
    COMMONWEALTH OF VIRGINIA
    FROM THE CIRCUIT COURT OF THE CITY OF HAMPTON
    Michael A. Gaten, Judge
    Charles E. Haden for appellant.
    Ken J. Baldassari, Assistant Attorney General (Jason S. Miyares,
    Attorney General, on brief), for appellee.
    Following a bench trial, the City of Hampton Circuit Court (the “trial court”) convicted
    David Keenan Brown (“appellant”) of two misdemeanor charges: driving under the influence of
    drugs in violation of Code § 18.2-266 and following too closely in violation of Code § 46.2-816.
    Appellant appeals on the sole claim that the evidence was insufficient to support his convictions.
    This Court finds the evidence insufficient as to the first charge, driving under the influence, but
    not as to the second. Therefore, this Court reverses the conviction for driving under the
    influence of drugs but affirms appellant’s conviction for following too closely.
    *
    Pursuant to Code § 17.1-413, this opinion is not designated for publication.
    I. BACKGROUND1
    This Court recounts the facts “in the ‘light most favorable’ to the Commonwealth, the
    prevailing party in the trial court.” Hammer v. Commonwealth, 
    74 Va. App. 225
    , 231 (2022)
    (quoting Commonwealth v. Cady, 
    300 Va. 325
    , 329 (2021)). In doing so, this Court discards any
    evidence presented by appellant that conflicts with the Commonwealth’s evidence and “regard[s]
    as true all the credible evidence favorable to the Commonwealth and all fair inferences to be
    drawn therefrom.” Cady, 300 Va. at 329 (quoting Commonwealth v. Perkins, 
    295 Va. 323
    , 324
    (2018)).
    On March 31, 2021, at approximately 11:00 p.m., appellant rear-ended another vehicle,
    occupied by Mr. James Johnson and Mrs. Cynthia Johnson, at an intersection in the City of
    Hampton. After arriving at the scene of the accident, police Officer Ringling spoke to appellant,
    who was sixty-four years old, approximately six feet tall, and weighed 180 pounds. Appellant
    “appeared unsteady on his feet and . . . very lethargic while looking for his license and
    registration information.” Based on those observations, Officer Ringling administered several
    standard field sobriety tests (“SFSTs”) to appellant.
    Officer Ringling acknowledged at trial that appellant performed the first four tests
    correctly: (1) counting backwards from sixty-four to forty-six; (2) counting his fingers from one
    to four and back again by touching his thumb to the tip of his finger; (3) reciting the alphabet
    from letters E through S; and (4) the finger-to-nose test, which required appellant “to extend his
    index fingers out to the side while keeping his feet together” and then “touch the tip of his finger
    to the tip of his nose and bring it back in one smooth motion” while keeping his head tilted back
    and eyes closed.
    1
    The record in this case contains a statement of facts in lieu of a transcript of the
    evidence and testimony presented at trial. The trial court certified the statement as “accurate and
    complete,” and the Commonwealth agreed.
    -2-
    However, appellant “performed poorly” on the final three tests: the horizontal gaze
    nystagmus (“HGN”) test; the nine-step walk-and-turn test; and the one-leg stand test. The HGN
    test “notes the presence of nystagmus, an involuntary jerking of the eye that can be caused by
    central nervous system depressants.” According to Officer Ringling:
    [Appellant] displayed a lack of smooth pursuit in both the left and
    right eyes. There was a distinct and sustained nystagmus noted at
    maximum deviation. The onset of nystagmus was noted prior to
    45 degrees in both eyes.
    Successful completion of the final two tests requires good balance, which appellant could
    not maintain. During the walk-and-turn test, appellant did not walk in a straight line and
    “raise[d] his arms to steady himself.”2 For the one-leg stand, appellant “was unable to maintain
    his balance for long and quickly put his foot down” before Officer Ringling instructed him to do
    so.3
    Notwithstanding the absence of any further evidence that appellant might be
    intoxicated—no watery or bloodshot eyes, no slurred speech, no odor of alcohol coming from
    him—Officer Ringling asked appellant whether he “had anything to drink.”4 When appellant
    said no, Officer Ringling then inquired whether he “had any physical disabilities or had taken
    any medication.” Appellant explained that he had “arthritis in his right foot and that his right
    foot was larger than his other foot, which tended to cause [him] to have problems with his
    2
    This test required appellant to take nine heel-to-toe steps along an imaginary straight
    line, “then pivot on his left foot in a series of small steps to execute a 180-degree turn,” and walk
    nine heel-to-toe steps back along the same line.
    3
    This test required appellant “to stand on one foot and raise it approximately six inches
    from the ground, keeping the foot parallel to the ground, keeping both legs straight, and counting
    out loud . . . until Officer Ringling told him to stop.”
    4
    Appellant also blew into an Alco sensor device—a portable preliminary breath test
    machine—at Officer Ringling’s request on scene, but the device “did not detect the presence of
    alcohol.”
    -3-
    balance.” He also stated that he had taken “Ambien, melatonin, and amitriptyline, a medication
    used to treat fibromyalgia in adults.”
    Officer Ringling issued a summons and arrested appellant at approximately 11:45 p.m. on
    misdemeanor charges of following too closely and driving under the influence, first offense. He
    immediately transported appellant to the hospital where registered nurse Zachary Martin took a
    sample of appellant’s blood.5 Mr. Martin submitted appellant’s blood sample to the Virginia
    Department of Forensic Science for testing.
    The Hampton General District Court conducted a bench trial on July 28, 2021, after
    which it found appellant guilty on both counts. Appellant appealed that judgment to the trial
    court, which held a de novo bench trial on September 7, 2021.6
    At that trial, both Mr. and Mrs. Johnson testified that appellant rear-ended their vehicle
    on March 31, 2021, as they came to a stop at the intersection in Hampton. Officer Ringling
    testified to his observations of appellant at the scene of the accident, including appellant’s
    performance on the SFSTs, as well as appellant’s statements about the medications he had taken
    that evening.
    Next, the Commonwealth introduced the results of appellant’s blood test by admitting
    into evidence a certificate of analysis (the “certificate”) dated June 11, 2021. The certificate
    indicated that lab technician Ms. Eileen Briley performed the forensic testing of appellant’s
    blood on April 12, 2021. Dr. Jon Dalgleish examined and analyzed those results on June 7,
    2021, after which he prepared and signed the certificate. Appellant’s blood was screened for a
    variety of drugs and drug classes, including ethanol (blood alcohol), cocaine, opiates,
    5
    Appellant consented to the blood draw.
    6
    Appellant represented himself pro se at both trials.
    -4-
    oxycodone, methamphetamine, fentanyl, methadone, barbiturates, zolpidem (Ambien),7
    cannabinoids, tricyclic antidepressants, and trazadone.
    The only reported elements detected in appellant’s blood were zolpidem (0.052 ± 0.010
    mg/liter), amitriptyline (0.17 ± 0.04 mg/liter), and nortriptyline (0.23 ± 0.06 mg/liter). No
    alcohol or any other drugs were detected. Neither Dr. Dalgleish nor Ms. Briley testified at trial,
    and the Commonwealth did not offer any other expert testimony as to the contents of the
    certificate.
    Following the Commonwealth’s evidence, appellant testified on his own behalf. He
    acknowledged “having failed to stop in time to avoid hitting the rear of the Johnsons’ vehicle,”
    but “denied that he had been following the Johnsons’ vehicle too closely or that the accident
    occurred because he had been . . . under the influence of alcohol or drugs.” Rather, appellant
    claimed that “he failed to realize until too late that the Johnsons’ vehicle had come to a stop”
    because “something on the side of the roadway” momentarily distracted him and by the time he
    “returned his attention to the road” he couldn’t avoid the collision.
    Appellant further denied “having consumed any beer or alcohol” on March 31 and
    insisted that the medications he had taken had not “caused him to be under the influence or
    unable to drive safely.” His testimony at trial was consistent with what he told Officer Ringling
    at the scene of the accident: that he had taken Ambien, melatonin, and amitriptyline, that his
    doctor had prescribed the amitriptyline (used to treat fibromyalgia in adults) because he had
    arthritis in his right foot, that his right foot was larger than his left foot, and that the combination
    of his arthritis and mismatched feet “tended to cause . . . problems with his balance.”
    7
    For purposes of the appeal, this Court recognizes that Ambien is the trade name for the
    drug zolpidem. Although the record is silent as to whether this connection was sufficiently
    established at appellant’s trial, both parties appear to assume such and have not raised this issue
    on brief.
    -5-
    Prior to the trial court’s judgment, appellant “challeng[ed] the sufficiency of the
    evidence” on the same grounds now presented on appeal, namely, that the Commonwealth failed
    to prove appellant had been following the Johnsons’ vehicle too closely or that he was under the
    influence of drugs to a degree that “impair[ed] his ability to drive or operate his motor vehicle
    safely.” In support of this claim, appellant noted that “the mere happening of an accident
    d[oes]n’t by itself prove that he had driven recklessly or improperly.”
    In addition to claiming that his pre-existing medical conditions hindered his ability to
    perform the SFSTs involving balance, appellant opined that being lethargic and unsteady are
    symptoms “consistent with a person who had just experienced an automobile crash and had been
    rendered dazed and confused from the impact.” Unconvinced by appellant’s arguments, the trial
    court denied his “functional equivalent of a motion to strike the evidence” and found appellant
    guilty of both charges.
    This appeal followed.8
    II. STANDARD OF REVIEW
    Appellant’s sole assignment of error on appeal alleges that the trial court erred in finding
    the evidence sufficient to convict him of both charges.
    “When reviewing the sufficiency of the evidence, ‘[t]he judgment of the trial court is
    presumed correct and will not be disturbed unless it is plainly wrong or without evidence to
    8
    On March 11, 2022, the trial court issued an “Amended Criminal Order” in response to
    this Court’s March 8, 2022 order for the sole purpose of clarifying that:
    [T]he prosecution in this matter was under Virginia Code
    § 18.2-266 and 46.2-816, state codes. The “local ordinance” boxes
    that are checked on the conviction/sentencing orders dated
    September 7, 2021, are an administrative mechanism to allow the
    City to collect fines but the substance of the charges were a state
    prosecution, prosecuted by Michael Mullen, former Assistant
    Attorney for the Commonwealth.
    -6-
    support it.’” McGowan v. Commonwealth, 
    72 Va. App. 513
    , 521 (2020) (alteration in original)
    (quoting Smith v. Commonwealth, 
    296 Va. 450
    , 460 (2018)). In such cases, the “relevant
    question is whether ‘any rational trier of fact could have found the essential elements of the
    crime beyond a reasonable doubt.’” Vasquez v. Commonwealth, 
    291 Va. 232
    , 248 (2016)
    (quoting Williams v. Commonwealth, 
    278 Va. 190
    , 193 (2009)). To the extent that analysis
    raises a question of statutory interpretation, this Court reviews such issues de novo. See Eley v.
    Commonwealth, 
    70 Va. App. 158
    , 162 (2019); Blake v. Commonwealth, 
    288 Va. 375
    , 381 (2014)
    (“[W]e . . . review de novo the scope and application of the statute under which the defendant
    was convicted.”).
    In the context of cases involving allegations of intoxicated driving under Code
    § 18.2-266(iii), the factfinder is expressly directed to “determine the innocence or guilt of the
    defendant from all the evidence concerning his condition at the time of the alleged offense.”
    Code § 18.2-268.10(D). This Court defers to the factfinder “to resolve conflicts in the testimony,
    to weigh the evidence, and to draw reasonable inferences from basic facts to ultimate facts.”
    Abdullah v. Commonwealth, 
    53 Va. App. 750
    , 755 (2009) (quoting Jackson v. Virginia, 
    443 U.S. 307
    , 319 (1979)).
    III. ANALYSIS
    In challenging the sufficiency of the evidence, appellant contends the Commonwealth
    failed to prove that he: (1) operated his vehicle while under the influence of drugs; (2) followed
    the Johnsons’ vehicle too closely; and (3) operated his vehicle in a reckless or improper manner.
    For the reasons stated below, this Court reverses appellant’s conviction for driving under the
    influence of drugs and affirms appellant’s conviction for following too closely.
    -7-
    A. Appellant’s Conviction for Driving Under the Influence of Drugs
    Code § 18.2-266 provides several ways by which a person may be convicted for driving
    while under the influence of alcohol, drugs, or both. The trial court convicted appellant for
    driving under the influence of drugs pursuant to subsection (iii) of the statute, which makes it
    unlawful for any person to drive or operate any motor vehicle . . .
    while such person is under the influence of any narcotic drug or
    any other self-administered intoxicant or drug of whatsoever
    nature, or any combination of such drugs, to a degree which
    impairs his ability to drive or operate any motor vehicle, engine or
    train safely.
    Code § 18.2-266(iii) (emphasis added). That language is substantively distinct from the
    preceding subsection, which simply makes it “unlawful for any person to drive or operate a
    motor vehicle . . . while such person is under the influence of alcohol.” Code § 18.2-266(ii).
    In contrast, subsection (iii) is purposefully written to require proof not only that the
    defendant was under the influence of drugs but also that those drugs actually impaired the
    defendant’s ability to drive safely. At oral argument, the Commonwealth contended that the
    totality of the evidence, viewed as a whole, supports the trial court’s reasonable inferences in
    satisfaction of this burden of proof.9 Despite admitting that calling an expert at appellant’s trial
    would have been “best practices,” the Commonwealth steadfastly maintained that such evidence
    was not necessary for the trial court to convict appellant. This Court disagrees as to both
    grounds.
    9
    In convicting appellant, the trial court had to have made the following inferences: that
    the levels of zolpidem, amitriptyline, and nortriptyline in appellant’s blood were sufficient to
    subject appellant to their chemical effects, that such chemical effects included—and were
    directly responsible for—appellant’s lethargy and difficulty balancing, and that those effects
    actually impaired appellant’s ability to drive safely by causing him to rear-end the Johnsons’
    vehicle. As explained below, these inferences are insufficient for a finding of guilt, thus
    requiring reversal of appellant’s conviction under Code § 18.2-266(iii).
    -8-
    At the outset, this Court readily acknowledges that “[c]ircumstantial evidence is not
    ‘viewed in isolation’ because the ‘combined force of many concurrent and related circumstances,
    each insufficient in itself, may lead a reasonable [fact finder]’ to conclude beyond a reasonable
    doubt that a defendant is guilty.” Rams v. Commonwealth, 
    70 Va. App. 12
    , 27 (2019) (second
    alteration in original) (quoting Muhammad v. Commonwealth, 
    269 Va. 451
    , 479 (2005)). This
    principle is frequently applied to so-called “refusal” cases, in which a defendant accused of
    driving under the influence refuses to take any type of chemical test.
    In those situations, a defendant may be convicted based solely on the arresting officer’s
    testimony about the accused’s behavior and physical state, if sufficient to prove guilt beyond a
    reasonable doubt. For example, circumstantial evidence sufficient to prove the defendant
    operated a motor vehicle while under the influence of alcohol—in violation of Code
    § 18.2-266(ii)—often consists of an officer’s observations that the defendant was driving in an
    erratic or unlawful manner, had red, watery, and bloodshot eyes, was unsteady on their feet, had
    slurred speech, had the odor of an alcoholic beverage on their breath, and failed one or more
    SFSTs.
    Those observations, however, are significantly less informative in cases involving
    substances other than alcohol. The common signs of alcohol intoxication widely recognized by
    the general public and trial courts are not necessarily indicative of intoxication by other drugs.
    The Commonwealth argues that Wood v. Commonwealth, 
    57 Va. App. 286
     (2010), makes
    the effects of Ambien general knowledge just like the effects of alcohol impairment, thus
    obviating the need for expert testimony. This Court rejects that interpretation of Wood and
    declines to impose such a per se rule here.
    In Wood, appellant’s conviction for felony child neglect—based on driving while
    intoxicated with her children in the car—was affirmed because her “high level of [alcohol]
    -9-
    intoxication . . . alone justifie[d] a finding of gross, wanton, and culpable conduct.” 57 Va. App.
    at 301. This Court went on to note that Wood’s ingestion of Ambien was an “aggravating
    factor[] beyond [her] intoxication” because Ambien is a “‘hypnotic drug’ . . . given for the
    primary purpose of causing and inducing sleep.” Id. at 302. That dicta, however, comes
    verbatim from Dr. Edinboro’s expert testimony at Wood’s trial. Id. at 293-95.10 It is not a fact
    of which the trial court can take judicial notice in every case involving Ambien.
    Accordingly, a conviction under subsection (iii) cannot rely on observations of a
    defendant’s behavior without other evidence linking that behavior to the effects of a particular
    drug to a degree that impairs his ability to drive safely. Unlike subsection (iii), subsections (i)
    and (v) provide per se thresholds for conviction based upon enumerated levels of alcohol or
    drugs in a defendant’s blood.11 And Code § 18.2-269—which tracks the language of Code
    § 18.2-266—creates certain presumptions of a person’s impairment to an unsafe degree based on
    different levels of alcohol or drugs detected in the person’s blood.12 But none of those
    presumptions apply to the specific drugs detected in appellant’s blood: zolpidem, amitriptyline,
    and nortriptyline.
    10
    Dr. Edinboro also “noted that both alcohol and [z]olpidem are central nervous system
    depressants, so there is an ‘additive effect’ when both are consumed.” Wood, 57 Va. App. at
    295.
    11
    Subsection (i) of Code § 18.2-266 makes it illegal for a person to drive or operate a
    motor vehicle while having “a blood alcohol concentration of 0.08 percent or more.” Subsection
    (v) makes it illegal for a person to drive or operate a motor vehicle while having a per liter blood
    concentration of either “0.02 milligrams of cocaine,” “0.1 milligrams of methamphetamine,”
    “0.01 milligrams of phencyclidine,” or “0.1 milligrams of
    3,4-methylenedioxymethamphetamine.”
    12
    The only part of Code § 18.2-269 that creates a presumption for drugs is subsection
    (A)(4), which states that if a chemical test shows the presence of cocaine, methamphetamine,
    phencyclidine, or 3,4-methylenedioxymethamphetamine in amounts equal to or greater than
    those set forth in Code § 18.2-266(v), “it shall be presumed that the accused was under the
    influence of drugs at the time of the alleged offense to a degree which impairs his ability to drive
    or operate any motor vehicle, engine or train safely.”
    - 10 -
    Thus, where, as in appellant’s case, the drugs at issue do not give rise to a statutory
    presumption of causation, the Commonwealth cannot satisfy the causation requirement of Code
    § 18.2-266(iii) without proving a specific drug, or combination thereof, affected the driver to a
    degree that impaired his ability to drive safely. Cf. Davis v. Commonwealth, 
    8 Va. App. 291
    ,
    296 (1989) (“[A] blood alcohol concentration which seriously impairs one individual’s ability to
    drive safely may impair to a different degree another’s ability to do so.”). Consequently, the
    results of appellant’s blood analysis, standing alone, are insufficient for this purpose. Nor does
    joint consideration of those results with the remainder of the Commonwealth’s evidence result in
    a different conclusion.
    At appellant’s trial, the Commonwealth presented no evidence to support its proposition
    that the drugs in appellant’s blood caused his lethargy or unsteadiness. In the absence of such
    evidence, the trial court could not reasonably infer beyond a reasonable doubt that appellant’s
    lethargy and balance issues were in fact signs of actual impairment of his ability to drive safely,
    let alone that they were caused by the specific levels of zolpidem, amitriptyline, and nortriptyline
    in his blood. See Moody v. Commonwealth, 
    28 Va. App. 702
    , 706 (1998) (“The fact finder . . . is
    entitled to draw inferences from proved facts, so long as the inferences are reasonable and
    justified.”). Moreover, appellant’s mere failure to pass the HGN test provides no further proof as
    to whether he was impaired to the extent he could not drive safely.
    Officer Ringling did not observe appellant driving, nor did he explain how the presence
    of appellant’s nystagmus would affect his driving or his balance. Instead, Officer Ringling
    merely testified that the HGN test is designed to detect “the presence of nystagmus, an
    involuntary jerking of the eye that can be caused by central nervous system depressants.”
    (Emphasis added). Neither defendant’s admission of taking drugs nor the confirmatory results in
    the certificate prove that his nystagmus was in fact caused by the zolpidem, amitriptyline, or
    - 11 -
    nortriptyline detected in his blood. See Henshaw v. Commonwealth, 
    3 Va. App. 213
    , 217 n.1
    (1986) (“The [HGN] test is thought to be a valid measure of blood alcohol content but is subject
    to criticism on the basis that its administration in the field may yield imprecise results and may
    be clouded by physiological processes other than intoxication.”).
    Thus, the totality of the Commonwealth’s evidence was insufficient to bridge the causal
    gap between appellant’s ingestion of drugs and the trial court’s conclusion that those drugs
    impaired appellant to the extent he could not drive safely.
    It is not mere coincidence that Virginia courts have relied on expert testimony when
    affirming other defendants’ convictions in cases where sufficiency of the evidence was
    challenged as to drug-impaired driving. Take, for example, Martini v. Commonwealth, No.
    0392-15-4 (Va. Ct. App. Mar. 8, 2016), in which this Court affirmed Martini’s conviction under
    Code § 18.2-266 after she rear-ended another vehicle while under the influence of drugs. The
    evidence in that case included Martini’s admission to Officer Walton that she had taken
    medication which “makes her drowsy” as well as expert testimony that the high levels of
    alprazolam and diazepam found in Martini’s blood “are consistent with drowsiness, slowed
    reflexes, slowed reaction time, lethargy, slurred speech, slowed processing, slowed decision
    making, extreme difficulty with balance, and effects on coordination.” Id., slip op. at 13-14.
    As a result of that particular evidence, the Court upheld “the jury’s conclusion that
    Martini was under the influence of her prescription drugs to a degree that impaired her ability to
    operate her vehicle safely.” Id., slip op. at 14; see also Lambert v. Commonwealth, 
    70 Va. App. 54
    , 65-66 (2019) (finding appellant’s admission to consuming methadone prior to the accident
    and Dr. Kuhlman’s testimony that the significant level of methadone in appellant’s blood could
    “cause depressant effects that impair the ability to drive including lethargy, dizziness, slowed
    hand-eye coordination, and difficulty balancing” were “sufficient to support the jury’s
    - 12 -
    conclusion that appellant was under the influence of an intoxicant while driving”), aff’d, 
    298 Va. 510
     (2020).
    With regard to Ambien specifically, Wood does not stand for the Commonwealth’s
    proposition, as discussed above, that the effects of Ambien are so well established as to be
    considered general common knowledge and thus obviate the need for expert testimony.
    However, the expert testimony presented in Wood provides a useful example of the required
    causation evidence missing from appellant’s trial. In particular, Dr. Edinboro opined that the
    level of Ambien in Wood’s blood would have been .12 mg/liter at the time of the car crash,
    which is “consistent with the ingestion of one tablet.” Wood, 57 Va. App. at 294. He further
    opined that “[z]olpidem in the blood at .09 [mg/liter] indicates the person should be sleeping, not
    driving” because the drug’s effects include “drowsiness, confusion, lack of cognitive ability and
    some motor incoordination.” Id.
    Similar testimony was introduced at appellant’s trial for driving under the influence of
    drugs in Shortt v. Commonwealth, No. 2435-09-4 (Va. Ct. App. Nov. 9, 2010). In that case,
    Dr. O’Neal testified that the 0.14 mg/liter of zolpidem found in Shortt’s blood was “within the
    normal range for a therapeutic dose of a 10-milligram Ambien tablet.” Id., slip op. at 4.
    According to Dr. O’Neal, Ambien is mainly used to treat insomnia because it “induces sleep” by
    causing “sedation and drowsiness.” Id. Other effects include “loss of balance and coordination,
    increased reaction time, confusion, disorientation, loss of short-term memory, and slurred
    speech.” Id.
    In the case of Riley v. Commonwealth, 
    277 Va. 467
     (2009), the Commonwealth offered
    expert testimony from Dr. Saady that the .56 mg/liter of zolpidem found in appellant’s blood was
    “rather excessive” because “a normal-size individual [would] have to take four [Ambiens] in
    order to achieve” that concentration level. 277 Va. at 475 (alterations in original). Dr. Saady
    - 13 -
    further explained that Ambien is “pharmacologically designed to induce sleepiness,” such that it
    “takes effect on the individual in about 15 minutes and reaches it [sic] peak level of
    concentration approximately one hour after ingestion.” Id. If the individual remains awake after
    taking Ambien, “the medication can cause drowsiness, confusion, somnolence, and coordination
    problems.” Id. In Dr. Saady’s opinion, all those side effects “would affect a person’s ability to
    operate a motor vehicle,” and “Riley’s reported behavior on the night of the accident was
    consistent with an excessive dose of Ambien.” Id. at 475-76.13
    This Court finds it worth noting that the certificate introduced at appellant’s trial shows
    .052 mg/liter of zolpidem in appellant’s blood. That level is significantly less than those to
    which Dr. Edinboro, Dr. O’Neal, and Dr. Saady ascribed the effects of Ambien.
    As a final point, this Court holds that a trial court cannot reverse engineer this causal link
    by claiming a defendant’s car accident inherently creates a reasonable inference of impairment,
    even where the defendant’s fault in causing the accident is undisputed. Although not immaterial
    to this inquiry, the trial court’s determination here that appellant violated Code § 46.2-816 does
    not inherently give rise to a reasonable inference that appellant was following the Johnsons’
    vehicle too closely as a result of having taken zolpidem, amitriptyline, and nortriptyline. These
    are two distinct charges for which the Commonwealth had the burden of proving each element
    beyond a reasonable doubt.
    It is axiomatic that a person can violate traffic laws without being under the influence of
    alcohol or drugs; or, alternatively, can be found guilty of driving under the influence without
    having violated any other law. See, e.g., Spickard v. City of Lynchburg, 
    174 Va. 502
    , 504 (1940)
    (“One may be both drunk and reckless. He may be reckless though not drunk; he may even be
    13
    In Riley, the Supreme Court affirmed appellant’s convictions for “driving while
    intoxicated and maiming another person as a result of driving while intoxicated.” 277 Va. at
    485.
    - 14 -
    . . . under the influence of intoxicants and yet drive carefully.”). But the evidence in this case
    does not prove that the drugs appellant consumed actually impaired him in any way, nor that any
    impairment, if proven, would have caused him to follow the Johnsons’ vehicle too closely.
    Therefore, in the absence of a statutory presumption, expert testimony, or other
    explanatory evidence, the trial court could not reasonably infer that appellant’s ingestion of
    Ambien, melatonin, and amitriptyline impaired his ability to drive safely. Consequently, the trial
    court erred in finding the evidence sufficient to convict appellant of driving under the influence
    of drugs under Code § 18.2-266(iii).
    B. Appellant’s Conviction for Following Too Closely
    The trial court convicted appellant under Code § 46.2-816 for following the Johnsons’
    vehicle too closely. That statute prohibits the driver of a motor vehicle from following another
    vehicle “more closely than is reasonable and prudent, having due regard to the speed of both
    vehicles and the traffic on, and conditions of, the highway at the time.” Code § 46.2-816. The
    Supreme Court has “construed this statute as granting a driver the right to follow another vehicle
    as closely as is reasonable and prudent under the circumstances. What constitutes a reasonable
    distance must, in each instance, depend upon the particular facts involved.” Clifton v. Gregory,
    
    212 Va. 859
    , 862 (1972).
    This fact-specific inquiry precludes a trial court from finding a defendant guilty of
    following too closely merely because an accident happened. See Bacon v. Commonwealth, 
    220 Va. 766
    , 769 (1980) (“[T]he mere fact that an accident happened . . . does not give rise to an
    inference of reckless driving, or of improper driving.”). But evidence as to the manner in which
    an accident occurred can give rise to a reasonable inference that a defendant was following more
    closely than reasonable under the circumstances. Cf. Powers v. Commonwealth, 
    211 Va. 386
    ,
    389 (1970) (reversing appellant’s reckless driving conviction where the Court had “no way of
    - 15 -
    determining from the evidence in [the] record how and why the accident happened”). As the
    Supreme Court explained in Maroulis v. Elliott, 
    207 Va. 503
     (1966):
    The likelihood of sudden stopping is one of the reasons for
    requiring an automobile driver to keep a proper lookout, and to
    maintain a reasonable and prudent distance behind an automobile
    in front of him. Every driver knows that vehicles may stop
    suddenly for various reasons or causes. It is not necessary that one
    should foresee the cause of which a car may stop; but if he is
    prudent he must recognize the possibility of a sudden stop.
    
    207 Va. at 509
     (interpreting former Code § 46.1-213,14 a nearly identical predecessor to Code
    § 46.2-816).
    In Litchford v. Hancock, 
    232 Va. 496
    , 499 (1987), the Court clarified that drivers are held
    to a standard of ordinary care “to observe other vehicles on the highway, to see what a
    reasonable person would have seen, and to react as a reasonable person would have reacted
    under the circumstances to avoid a collision.” Applying these principles to appellant’s case, this
    Court finds the record contains two important pieces of evidence that support the trial court’s
    reasonable inference that appellant was following the Johnsons too closely.
    First, both Mr. and Mrs. Johnson testified that their vehicle had slowed down and come to
    a stop at the intersection before appellant struck them. The trial court could thus reasonably
    conclude that a prudent driver keeping a proper lookout would have noticed both the
    approaching intersection and the slowing of the Johnsons’ car. That prudent driver would then
    have responded accordingly in order to maintain a reasonable distance from the Johnsons. By
    rear-ending the Johnsons at the intersection, appellant failed to maintain both a proper lookout
    and reasonable distance.
    14
    Former Code § 46.1-213 provided: “The driver of a motor vehicle shall not follow
    another motor vehicle, trailer or semitrailer more closely than is reasonable and prudent, having
    due regard to the speed of both vehicles and the traffic upon, and conditions of, the highway at
    the time.”
    - 16 -
    Second, appellant testified that he took his eyes off the road “momentar[il]y” because he
    was distracted by something on the side of the road. When he returned his gaze to the front,
    appellant saw that the Johnsons’ car had stopped, but he was too close to stop his own vehicle
    from hitting them. Based on these facts, the trial court could reasonably infer that a mere
    moment’s distraction would not have caused appellant to rear-end the Johnsons’ vehicle unless
    he had been following too closely.
    Therefore, this Court finds the record contains sufficient evidence to support appellant’s
    conviction under Code § 46.2-816.
    III. CONCLUSION
    For the reasons stated above, this Court finds the evidence insufficient to support
    appellant’s conviction for driving under the influence of drugs in violation of Code
    § 18.2-266(iii). However, this Court finds the evidence sufficient to support appellant’s
    conviction for following too closely in violation of Code § 46.2-816. Therefore, this Court
    reverses appellant’s conviction for driving under the influence of drugs and affirms his
    conviction for following too closely.
    Affirmed in part and reversed in part.
    - 17 -