Mendoza v. State ( 2020 )


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  •                       NOTICE: NOT FOR OFFICIAL PUBLICATION.
    UNDER ARIZONA RULE OF THE SUPREME COURT 111(c), THIS DECISION IS NOT PRECEDENTIAL
    AND MAY BE CITED ONLY AS AUTHORIZED BY RULE.
    IN THE
    ARIZONA COURT OF APPEALS
    DIVISION ONE
    MARY ANN MENDOZA, Plaintiff/Appellant,
    v.
    STATE OF ARIZONA, Defendant/Appellee.
    No. 1 CA-CV 18-0350
    FILED 01-07-2020
    Appeal from the Superior Court in Maricopa County
    No. CV2015-051831
    The Honorable Aimee L. Anderson, Judge Retired
    AFFIRMED IN PART, REVERSED IN PART, AND REMANDED
    COUNSEL
    The Leader Law Firm, Tucson
    By John P. Leader
    Co-Counsel for Plaintiff/Appellant
    Robbins & Curtin, PLLC, Phoenix
    By Joel B. Robbins, Anne E. Findling
    Co-Counsel for Plaintiff/Appellant
    Zachar Law Firm, PC, Phoenix
    By Christopher J. Zachar
    Co-Counsel for Plaintiff/Appellant
    Fennemore Craig, P.C., Phoenix
    By Douglas C. Northup, Philip L. Brailsford
    Co-Counsel for Defendant/Appellee
    MENDOZA v. STATE
    Decision of the Court
    Arizona Attorney General’s Office, Phoenix
    By G. Michael Tyron
    Co-Counsel for Defendant/Appellee
    MEMORANDUM DECISION
    Judge David D. Weinzweig delivered the decision of the Court, in which
    Presiding Judge Randall M. Howe and Judge Jennifer M. Perkins joined.
    W E I N Z W E I G, Judge:
    ¶1            This is a wrongful death action. Mary Ann Mendoza appeals
    the superior court’s exclusion of her expert witnesses and its entry of
    summary judgment for the State of Arizona and the Arizona Department
    of Transportation (“ADOT”). We affirm in part, reverse in part and remand
    for further proceedings.
    FACTS AND PROCEDURAL BACKGROUND
    ¶2             Just after midnight on May 12, 2014, a motorist called 911 to
    report that Raul Silva-Corona (“Corona”) was driving northbound in the
    southbound lanes of State Route 101 near Cactus Road. From there, Corona
    would drive in the wrong direction for over 30 miles—spanning three
    Arizona freeways—before colliding with Brandon Mendoza’s oncoming
    vehicle. Both drivers died instantly. A post-mortem exam revealed that
    Corona had methamphetamine and almost three times the legal limit of
    alcohol in his blood.
    ¶3           A pair of ADOT operators watched the tragedy unfold from
    ADOT’s Traffic Operations Center, where ADOT monitors traffic
    conditions and disseminates public information. The Operations Center
    also has programmatic control over the large digital signs mounted above
    and along Arizona’s freeways, Dynamic Message Signs (“DMS”), which
    ADOT uses to inform motorists about hazards and roadway conditions in
    real time.
    ¶4           After hearing reports of a wrong-way driver on State Route
    101, the ADOT operators used ADOT traffic cameras and police radio to
    track Corona’s vehicle and anticipate his path. ADOT had not adopted a
    formal, scripted message to warn motorists about wrong-way driver
    emergencies. As a result, the ADOT operators were left to spontaneously
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    MENDOZA v. STATE
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    craft their own digital DMS warning for motorists in Corona’s path. The
    three-line warning read:
    ONCOMING TRAFFIC
    AHEAD
    KEEP RIGHT
    ¶5          Mary Ann Mendoza is Brandon’s mother. She sued the State
    alleging ADOT and the Arizona Department of Public Safety (“ADPS”)
    were negligent in failing “to take reasonable measures to prevent wrong-
    way accidents” and failing “to provide reasonable and appropriate traffic
    measures and law enforcement in light of the risks involved.”
    ¶6             Mendoza timely disclosed three expert witnesses, including
    Dr. Robert Bleyl and Dr. Eric Boelhouwer.1 Dr. Bleyl was disclosed as an
    expert witness on “highway safety and transportation engineering,” but the
    thrust of his opinion was that Arizona had not reasonably responded to the
    increase in wrong-way crashes and fatalities on its freeways between 2004
    and 2014. He opined that “Arizona has been negligent for decades, failing
    to address or implement procedures to remedy [the] known problem [of
    wrong-way drivers] on the state highways,” and that Arizona has not
    deployed the countermeasures used by other states. Meanwhile, Dr.
    Boelhouwer was offered as a human-factors and warnings expert. He was
    “also expected to address causation issues,” including whether Brandon’s
    death “would probably have been avoided” if ADOT “had displayed a
    reasonably adequate warning.”
    ¶7             The State deposed Dr. Bleyl and Dr. Boelhouwer. After
    discovery concluded, the State moved for summary judgment on four
    grounds, including absolute immunity under A.R.S. § 12-820.01 and
    qualified immunity under A.R.S. § 12-820.02(A)(1). The State further
    argued that summary judgment was proper because “Plaintiff cannot
    establish the standard of care” or its breach, and “cannot establish causation
    because she cannot show the collision would not have occurred had the
    State acted differently.” Separately, the State moved to exclude the expert
    testimony of Dr. Bleyl and Dr. Boelhouwer under Arizona Rule of Evidence
    702 (“Rule 702”).
    1     Mendoza also disclosed an expert on police practices, W.D.
    Robinson. The superior court excluded Robinson’s testimony, but
    Mendoza does not challenge that decision on appeal.
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    MENDOZA v. STATE
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    ¶8             The superior court later granted all the State’s motions in a
    single minute entry. It first excluded the expert testimony of Dr. Bleyl and
    Dr. Boelhouwer because Mendoza had “failed to meet her burden” to show
    the proposed experts satisfied the requirements of Rule 702. More
    specifically, the court excluded Dr. Bleyl’s testimony because (a) he was
    “not qualified as an expert on wrong-way driver countermeasures or the
    applicable standard of care,” (b) his opinions were “unreliable as they are
    not the product of reliable principles and methods,” (c) his opinions were
    unhelpful “as the opinions are not sufficiently tied to the facts of the
    particular collision in this case,” and (d) he offered “impermissible legal
    conclusions.” The court then excluded Dr. Boelhouwer’s testimony because
    he was “not qualified on DMS, and [did] not know the applicable standard
    of care.” It also found his opinions were “not relevant and unreliable as
    they are not based on the standard of care imposed by law.”
    ¶9            The court then granted summary judgment for the State on
    grounds of qualified immunity and because Mendoza could not “establish
    or prove the standard of care,” breach of the standard or causation.
    ¶10           Mendoza moved for reconsideration on both fronts. She
    argued that summary judgment was inappropriate because questions of
    material fact remained on breach and causation, even if the court did not
    consider her experts’ testimony. She asked the court to reconsider its
    exclusion of her experts, offered supplemental expert affidavits and sought
    permission “to retain new experts.” The court denied both motions. The
    court found it would be “highly improper” and “contrary” to Arizona law
    if Mendoza could “select new experts [or] amend her existing experts’
    opinions to cure any deficiencies.” It also explained the State would suffer
    “extreme prejudice” and her supplemental affidavits were untimely.2
    ¶11          Mendoza timely appealed, but abandoned her claims against
    ADPS during briefing. We have jurisdiction pursuant to A.R.S. § 12-
    2101(A)(1).3
    2       Mendoza does not contest the court’s refusal to accept her
    supplemental expert affidavits and we do not consider the affidavits here.
    Tilley v. Delci, 
    220 Ariz. 233
    , 238, ¶ 17 (App. 2009) (“The superior court was
    not required to accept and examine evidence presented to it for the first
    time in connection with [a] motion for reconsideration.”).
    3     We deny the State’s motion to strike Mendoza’s notice of
    supplemental authorities.
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    DISCUSSION
    ¶12         We first examine the court’s exclusion of Mendoza’s expert
    witnesses, which, if admissible, impacts the propriety of summary
    judgment.
    I.     Expert Witness Testimony
    ¶13             Arizona Rule of Evidence 702 governs the admissibility of
    expert testimony. Expert testimony is admissible when (a) the expert’s
    scientific, technical or other specialized knowledge will help the trier of fact
    to understand the evidence or to determine a fact in issue, (b) the testimony
    is based on sufficient facts or data, (c) the testimony is the product of reliable
    principles and methods, and (d) the expert has applied the principles and
    methods reliably to the facts of the case. Ariz. R. Evid. 702. Courts may
    also consider whether “an expert developed his opinion based on
    independent research, or whether the expert developed his opinion
    ‘expressly for the purposes of testifying.’” State ex rel. Montgomery v. Miller,
    
    234 Ariz. 289
    , 303, ¶ 47 (App. 2014) (citation omitted).
    ¶14           The superior court has broad discretion to admit or exclude
    expert testimony. Lohmeier v. Hammer, 
    214 Ariz. 57
    , 64, ¶ 25 (App. 2006). It
    serves as the “gatekeeper” to ensure an expert’s testimony is reliable and
    helpful to the jury. Ariz. R. Evid. 702 cmt. (2012). But the court must be
    careful not to “replace the adversar[ial] system” or “supplant traditional
    jury determinations of credibility and the weight to be afforded otherwise
    admissible testimony.” 
    Id. Thus, “[c]ross-examination,
    presentation of
    contrary evidence, and careful instruction on the burden of proof are the
    traditional and appropriate means of attacking shaky but admissible
    evidence.” 
    Id. ¶15 We
    review the court’s decision to exclude an expert’s
    testimony for abuse of discretion, State v. Bernstein, 
    237 Ariz. 226
    , 228, ¶ 9
    (2015), even when presented in the summary judgment context, Baker v.
    Univ. Physicians Healthcare, 
    231 Ariz. 379
    , 387, ¶ 30 (2013) (stating that the
    abuse of discretion standard “equally applies to admissibility questions in
    summary judgment proceedings”). An “abuse of discretion” exists when
    the court commits an error of law in reaching a discretionary decision that
    is “manifestly unreasonable, or exercised on untenable grounds, or for
    untenable reasons.” Torres for & on Behalf of Torres v. N. Am. Van Lines, Inc.,
    
    135 Ariz. 35
    , 40 (App. 1982).
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    ¶16         Mendoza bore the burden to prove by a preponderance of the
    evidence that the testimony of her expert witnesses satisfied the
    requirements of Rule 702. 
    Miller, 234 Ariz. at 298
    , ¶ 19.
    A.     Dr. Robert Bleyl
    ¶17           Mendoza first argues the superior court abused its discretion
    by preventing Dr. Bleyl from offering his expert opinion on whether the
    State failed to reasonably respond to the wrong-way driver problem on
    Arizona highways before the Mendoza crash, and whether the State’s
    alleged failure to respond with countermeasures increased the likelihood
    of Brandon’s death. The court excluded Dr. Bleyl’s testimony under Rule
    702 on grounds that he was unqualified, and his opinions were unreliable,
    unhelpful and legal conclusions.
    ¶18           We conclude the court did not abuse its discretion in
    determining that Dr. Bleyl’s opinions were unreliable. Rule 702 requires
    that an expert’s opinion be based on “sufficient facts or data” and represent
    “the product of reliable principles and methods.” Dr. Bleyl lacked basic
    facts and data, and “there [was] simply too great an analytical gap between
    the data and the opinion offered.” 
    Miller, 234 Ariz. at 298
    -99, ¶¶ 23, 26
    (quoting Gen. Elec. Co. v. Joiner, 
    522 U.S. 136
    , 146 (1997)).
    ¶19           Dr. Bleyl lacked information and knowledge about Arizona’s
    pre-collision efforts and measures to combat the wrong-way driver
    problem. See Lay v. City of Mesa, 
    168 Ariz. 552
    , 554 (App. 1991) (“The trial
    court did not abuse its discretion in excluding” expert’s testimony where
    “he was not familiar with the [signage placement] standards the City
    followed.”). Although Dr. Bleyl opines that Arizona “had no system in
    place to address” the wrong-way driver problem, he was unaware of
    Arizona’s pre-crash countermeasures or “what [the State] actually did” to
    combat the problem before the crash, conceding that he neither sought nor
    received an explanation about what Arizona had historically done to
    prevent wrong-way crashes.
    ¶20          Nor did Dr. Bleyl identify what countermeasures ADOT
    could or should have deployed to prevent an extremely impaired person
    from driving into the face of oncoming traffic for over 30 miles, seemingly
    unaware of the world around him, and avoiding Brandon’s tragic death.
    He merely “confirmed” that “there are recommendations and things that
    might be done to resolve and provide countermeasures to address the
    problem.” And even when he articulated possible countermeasures, he
    offered no basis for them. Thus, he opined that Arizona “ought” to expand
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    MENDOZA v. STATE
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    its use of “wrong way” signs beyond freeway entrances, but offered no
    source for his opinion and agreed the signs are not required or addressed
    by the Manual on Uniform Traffic Control Devices. He also criticized the
    size and placement of prior signs, but never explained why their height,
    size and placement were unreasonable. Instead, he only pointed to the
    State’s recent sign modifications, which prove nothing about the prior
    signage or whether the modifications were needed to meet some minimum
    standard of care.
    ¶21           Also problematic is Dr. Bleyl’s total reliance on Mendoza’s
    counsel for information crucial to his opinions, without verification, and
    absence of any independent research, analysis or cognizable methodology.
    
    Miller, 234 Ariz. at 303
    , ¶ 47. At his deposition, Dr. Bleyl conceded that he
    performed no independent research or analysis of Arizona’s roadways to
    determine “what wrong-way signage or detection systems do or do not
    exist,” but instead relied on Mendoza’s counsel to furnish the necessary
    information and articles. Moreover, Dr. Bleyl never even inquired how
    Mendoza’s counsel found or selected the universe of materials to provide.
    He further recognized that “[i]t’s impossible to know what’s out there that
    I don’t know about.”
    ¶22           Dr. Bleyl tried to justify his blind reliance by explaining that
    Mendoza’s counsel had hired him “over the years” and “not really
    cover[ed] up” or “hid[den] specific things” from him that “subsequently
    [came] up [and] should have been provided,” and by vouching that
    Mendoza’s counsel had provided him with “fair and objective” materials.
    But, while Dr. Bleyl can rely on information provided by counsel in forming
    an independent opinion, he “cannot forgo his own independent analysis
    and rely exclusively on what an interested party tells him.” Orthoflex, Inc.
    v. ThermoTek, Inc., 
    986 F. Supp. 2d 776
    , 798 (N.D. Tex. 2013).
    ¶23           Beyond that, Dr. Bleyl conceded he lacked the data to test or
    confirm the California Department of Transportation report supplied by
    Mendoza’s counsel, which provided the “only basis” for his analysis about
    the effectiveness of reasonable countermeasures. This omission buttressed
    the superior court’s reliability concerns. See, e.g., Munoz v. Orr, 
    200 F.3d 291
    ,
    301-02 (5th Cir. 2000) (describing expert testimony as “unreliable” where
    premised on plaintiffs’ data and expert “did not seek to verify the
    information presented to him”).
    ¶24          This court is mindful that “[c]ross-examination [and]
    presentation of contrary evidence” are the “traditional and appropriate
    means” to “attack[] shaky but admissible” expert testimony, Ariz. R. Evid.
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    MENDOZA v. STATE
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    702 cmt., but Dr. Bleyl’s testimony is not just shaky—it is unreliable and
    inadmissible. This is not one of the “close cases” where cross-examination
    can solve the problem. 
    Bernstein, 237 Ariz. at 230
    , ¶ 18. The superior court
    found that Dr. Bleyl lacked the foundational knowledge and information to
    reach a meaningful conclusion on the State’s historical approach and
    contemporary response to wrong-way drivers—he relied solely on others,
    without question or direction, to marshal the only materials he consulted in
    forming the conclusion. As such, his testimony was fatally flawed as a
    matter of law and of no meaningful assistance to the trier of fact.
    ¶25            Mendoza counters that this court found Dr. Bleyl was
    qualified and his opinions were reliable in an earlier case. But that case,
    Glazer v. State, 
    234 Ariz. 305
    (App. 2014), vacated in part, 
    237 Ariz. 160
    (2015),
    is irrelevant here. Glazer had different facts and issues—placement of
    freeway median barriers—and Dr. Bleyl offered his expert testimony on a
    different topic altogether—whether “the State should have installed a
    median barrier in the area where the crash occurred.” 
    Id. at 309,
    ¶ 5. Courts
    must vet the opinions of an expert witness based on the facts and issue of
    each case. “[T]he fact that a witness has qualified as an expert on previous
    occasions does not make him any more qualified to testify in the case at
    bar.” Englehart v. Jeep Corp., 
    122 Ariz. 256
    , 258 (1979).
    ¶26            On this record, we cannot say the superior court abused its
    discretion in excluding Dr. Bleyl’s expert testimony as unreliable.
    B.     Dr. Eric Boelhouwer
    ¶27          Mendoza next argues the superior court erroneously
    excluded the expert testimony of Dr. Boelhouwer, who concluded that
    ADOT posted an inadequate and inappropriate DMS warning message, the
    warning contributed to the accident, and ADOT should have scripted a
    formal DMS warning for operators to post in wrong-way emergencies. The
    court excluded this testimony as irrelevant and unreliable under Rule 702,
    emphasizing his opinions were “not based on the standard of care imposed
    by law,” he did “not know the applicable standard of care,” and he
    “performed no standard of care analysis” related to dynamic freeway
    warning signs. The court also found Dr. Boelhouwer unqualified because
    he had “nothing to support his opinions other than his prior general
    experience in human factors (unrelated to DMS) and his review of
    documents provide[d] to him by [Mendoza]’s Counsel.”
    ¶28           We reverse in part and affirm in part. The superior court
    abused its discretion in barring Dr. Boelhouwer’s human factors opinion,
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    including whether the warning language was appropriate and adequate to
    warn motorists, how humans perceive and react to alternative warning
    messages and how a different DMS warning might have impacted a
    driver’s behavior. The court did not err, however, in excluding Dr.
    Boelhouwer’s opinion concerning ADOT protocol and any conclusion that
    warning scripts were required under reasonable state transportation
    practices.
    1.     Language of Warning
    ¶29            Mendoza should have been allowed to offer Dr. Boelhouwer’s
    expert opinion that ADOT operators posted an “inadequate” and
    “inappropriate” DMS message to warn motorists about a wrong-way
    driver. A human factors expert “may opine about the behavior of an
    average person in some settings.” 1 McCormick on Evidence § 13 (Kenneth
    S. Broun, ed., 7th ed. 2016).
    ¶30            Dr. Boelhouwer is qualified as an expert to offer his opinion
    about the adequacy of specific warnings, especially under the “liberal
    minimum qualification” standard. State v. Delgado, 
    232 Ariz. 182
    , 186, ¶ 12
    (App. 2013) (qualifications of expert witness are “construed liberally”). He
    has knowledge, education and experience beyond the ken of lay jurors
    related to “how humans process information, warnings, and instructions.”
    State v. Davolt, 
    207 Ariz. 191
    , 210, ¶ 70 (2004) (“The test of whether a person
    is an expert is whether a jury can receive help on a particular subject from
    the witness.”). He has a Ph.D. and master’s degree in industrial and
    systems engineering, and a B.A. in chemical engineering. He belongs to
    various organizations related to human factors and product safety; works
    as a product-warning consultant on the format, content and layout of
    warnings; and has published and presented on human-factors issues.
    ¶31           Rule 702 does not require that Dr. Boelhouwer be the most
    qualified person to offer an opinion in the particular area of expertise. See
    
    Lay, 168 Ariz. at 554
    ; Smith v. Ingersoll-Rand Co., 
    214 F.3d 1235
    , 1244 (10th
    Cir. 2000) (holding that human-factors expert testimony was admissible in
    a products liability action against milling machine manufacturer even
    though the expert witness lacked firsthand experience with milling
    machines).
    ¶32           In that regard, the superior court erred by narrowly focusing
    on Dr. Boelhouwer’s experience with wrong-way driver incidents. The
    State can probe and explore Dr. Boelhouwer’s professional focus with a
    robust cross-examination, but his relative inexperience with highway signs
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    MENDOZA v. STATE
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    and wrong-way drivers goes to the weight of his testimony, not its
    admissibility. State v. Romero, 
    239 Ariz. 6
    , 11, ¶ 23 (2016) (stating that an
    expert’s “lack of experience in performing toolmark analyses and firearm
    identification experiments might have affected the weight a juror would
    give his testimony, but it did not bar its admission”); see also McMurtry v.
    Weatherford Hotel, Inc., 
    231 Ariz. 244
    , 251, ¶ 16 (App. 2013) (explaining that
    an expert’s “background and familiarity with certain building regulations
    goes to the weight of his testimony, not its admissibility”).
    ¶33           Dr. Boelhouwer’s warning opinion is also reliable enough to
    be tested on cross-examination at trial. Romero, 239 Ariz. at ¶ 17 (“Careful
    study may suffice to qualify an expert if it affords greater knowledge on a
    relevant issue than the jury possesses.”) (quoting State v. Girdler, 
    138 Ariz. 482
    , 490 (1983)). Unlike the opinion of Dr. Bleyl, Dr. Boelhouwer’s opinion
    is the product of independent research, background, experience, training
    and education. He conducted and relied on his own research and
    knowledge of human factors and warnings. He reviewed industry and
    research publications, related standards and studies about the effectiveness
    of wrong-way driver warnings. He reviewed four depositions and “a
    significant amount of production from both sides, plaintiff and defense.”
    He relied on scientific literature provided by counsel, but also performed
    independent research and relied on materials he found on his own.
    ¶34            He examined the warning message at issue, explained how it
    was flawed and proposed an alternative warning. He generally identified
    the elements of a proper warning, which should “include a signal word,
    hazard, and avoidance information.” He then challenged the use of
    “oncoming traffic” as too vague and ambiguous to warn motorists that a
    vehicle was racing towards them in the wrong direction, and offered
    “danger” and “wrong way driver” as the “strong, clear” alternative. He
    also criticized the absence of guidance on how motorists might avoid the
    danger, pointing to Houston’s warning since 2008: “ALL TRAFFIC MOVE
    TO SHOULDER AND STOP.”
    ¶35           His opinion is also relevant. A central issue in this lawsuit is
    whether the State breached its duty to keep roads “reasonably safe for
    travel.” See Dunham v. Pima Cty., 
    161 Ariz. 304
    , 306 (1989). “Where, as here,
    evidence is offered from which the fact-finder could reasonably conclude
    that the public agency or jurisdiction should have foreseen a danger to
    plaintiff from the negligent or inattentive conduct of plaintiff or of another,
    then the question of the [government’s] negligence is one for the jury.” 
    Id. Dr. Boelhouwer’s
    opinion may help the jury understand the evidence and
    decide the case.
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    ¶36            The State counters that Dr. Boelhouwer mistakenly believed
    the DMS message used “caution” instead of “keep right.” But Dr.
    Boelhouwer also challenged the use of “oncoming traffic” and omission of
    “danger” and “wrong way driver.” The State can expose and amplify the
    point at trial with evidence and cross-examination, but the asserted
    weakness is not reason to exclude the testimony altogether. See Pipher v.
    Loo, 
    221 Ariz. 399
    , 404, ¶ 17 (App. 2009) (challenges to “the accuracy and
    reliability of a witness’ factual basis, data, and methods go to the weight
    and credibility of the witness’ testimony”).
    ¶37            The State also argues that Dr. Boelhouwer is not a traffic
    engineer and has no basis to address causation and the chances of a car
    accident. We understand and appreciate the argument, but the State can
    probe and explore the subject with fulsome cross-examination—casting
    doubt on whether and how Dr. Boelhouwer’s general knowledge and
    experience in the human-factors world translates to motorists on Arizona
    highways. Ariz. R. Evid. 702 cmt. (2012) (“Cross-examination, presentation
    of contrary evidence, and careful instruction on the burden of proof are the
    traditional and appropriate means of attacking shaky but admissible
    evidence.”). “In close cases, the trial court should allow the jury to exercise
    its fact-finding function, for it is the jury’s exclusive province to assess the
    weight and credibility of evidence.” 
    Bernstein, 237 Ariz. at 230
    , ¶ 18.
    2.     ADOT Protocol
    ¶38           The court did not abuse its discretion, however, in excluding
    Dr. Boelhouwer’s opinion that ADOT should have responded to wrong-
    way driver emergencies with warning scripts. Mendoza points to no
    training or experience that qualifies Dr. Boelhouwer to offer an expert
    opinion about reasonable state government protocols and strategies in
    response to transportation safety issues. He has studied no literature and
    performed no research on reasonable policy decisions and formal
    government practices.
    II.    Summary Judgment
    ¶39           Mendoza argues the superior court erroneously entered
    summary judgment for the State on her claims against ADOT. We reverse
    and remand for the court to consider Dr. Boelhouwer’s expert testimony
    about the DMS warning and human-factors opinions, and determine
    whether summary judgment remains appropriate. We express no opinion
    on the State’s qualified immunity defense, and the court should consider
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    the merits of this defense on remand given the allowable parameters of Dr.
    Boelhouwer’s opinions.
    ¶40           Although we do not reach the issue here, we remind the
    superior court that expert testimony is not required to prove the standard
    of care in ordinary negligence cases. Rossell v. Volkswagen of Am., 
    147 Ariz. 160
    (1985). This is true because the factfinder “can rely on its own
    experience in determining whether the defendant acted with reasonable
    care under the circumstances.” Bell v. Maricopa Med. Ctr., 
    157 Ariz. 192
    , 194
    (App. 1988). In Arizona, juries are composed of motorists who regularly
    navigate and read signs on the state’s highway system. See Seide v. Rhode
    Island, 
    875 A.2d 1259
    , 1271 (R.I. 2005) (explaining that expert testimony is
    not required for determining an officer’s standard of care when in high-
    speed pursuit). By contrast, an average juror would not likely possess the
    knowledge or experience needed to critique the State’s historical strategies
    and countermeasures to wrong-way drivers.
    CONCLUSION
    ¶41           We affirm the superior court’s order excluding Dr. Bleyl’s
    expert testimony, but affirm in part and reverse in part the exclusion of Dr.
    Boelhouwer’s expert testimony. We also remand for further consideration
    of the State’s motion for summary judgment based on admissible record
    evidence. As the successful party on appeal, Mendoza is awarded her
    taxable costs upon compliance with ARCAP 21.
    AMY M. WOOD • Clerk of the Court
    FILED:    JT
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