Lead Opinion
delivered the opinion of the Court,
In this wrongful death and survival action, stemming from a multi-fatality vehicular accident, we consider the reliability of an accident reconstruction expert’s testimony, the legal sufficiency of the evidence supporting the verdict, and whether the admission of evidence concerning the illegal immigrant status of one of the parties to the accident was harmful error. The court of appeals, in a divided decision, concluded.that the expert’s testimony was reliable and therefore legally sufficient to support the plaintiffs’ verdict.
I. The Litigation
Several members of the Hughes family were killed when their vehicle collided with an eighteen wheel tractor-trailer rig heavily loaded with gravel. The accident occurred outside the city of Paradise on
Hughes’s husband and other family members sued Rodriguez and his employer, TXI, for the deaths. After a seven-day trial, a jury found that Rodriguez’s and TXI’s negligence proximately caused the accident, and awarded compensatory and exemplary damages. The trial court rendered judgment on the verdict. The court of appeals set aside the award of exemplary damages, but otherwise affirmed the judgment against Rodriguez and TXI.
What caused the Yukon to cross the center line into Rodriguez’s eastbound lane was the critical issue at trial. Both sides relied on acсident-reconstruction experts to explain their respective theories. Hughes’s accident-reconstruction expert opined that the gravel truck crossed the center line first, forcing Hughes to steer defensively into the eastbound lane where the collision occurred.
TXI sought to exclude Hughes’s expert, objecting that his opinion was unreliable. TXI also objected to evidence regarding Rodriguez’s status as an illegal immigrant on grounds of relevance and prejudice. Because the trial court overruled both objections, the jury learned Rodriguez had previously been deported and had made several misrepresentations regarding his immigration status to obtain his Texas commercial driver’s license and his employment with TXI. The dissent in the court of appeals concluded that the trial court had erred by admitting the expert testimony of Hughes’s accident reconstruc-tionist and the evidence of Rodriguez’s illegal immigrant status. Id. at 922 (Gardner, J., dissenting). We granted TXI’s petition for review to consider these issues.
II. The Accident-Reconstruction Expert
TXI argues the trial court erred by overruling its timely objection to Hughes’s reconstruction expert, Dr. Kurt Marshek, whom it contends expressed an unreliable opinion that Rodriguez caused the accident by crossing the center line first.
A. The Standard of Review
For an expert’s testimony to be admissible, the expert witness must be qualified to testify about “scientific, technical, or other specialized knowledge,” Tex.R. Evid. 702, and the testimony must be relevant and based upon a reliable foundation. Exxon Pipeline Co. v. Zwahr,
When the reliability of an expert’s testimony is challenged, courts “ ‘should ensure that the [expert’s] opinion comports with the applicable professional standards.’ ” Helena Chem. Co. v. Wilkins,
B. The Expert’s Testimony
Dr. Kurt Marshek, an emeritus professor of mechanical engineering at the University of Texas, testified for Hughes. In preparing for his testimony, Marshek reviewed the police accident report and photographs from the accident scene, visited and took measurements at the accident site, specifically measured the gouge and scrape marks created by the accident, ran skid tests with an еxemplar vehicle and measuring device to determine the roadway’s coefficient of friction, inspected and photographed the Yukon, collected data on the Yukon’s speed and braking during the five seconds before impact from the vehicle’s “black box,” performed a time-distance analysis, and reviewed the accident scene witnesses’ statements and depositions. Employing this data, Marshek rendered drawings of the accident site to illustrate his theory of the accident. Mar-shek’s theory was that Rodriguez left his lane of travel, crossed over the center line into the westbound lane, and partially reentered his eastbound lane before the initial impact with the Yukon. Marshek further concluded Kimberly Hughes steered sharply left into the eastbound lane to avoid Rodriguez’s gravel truck, which then at least partially occupied her lane, resulting in the collision in Rodriguez’s eastbound lane.
C. TXI’s Reliability Complaints
TXI complains Marshek’s testimony is no evidence that Rodriguez proximately caused the collision. Marshek was the only witness to suggest the gravel truck crossed the center line, but TXI assails his testimony, arguing that (1) Marshek incоrrectly assumed that the gouge mark pinpointed the place on the road where the Yukon collided with the gravel truck’s second axle; (2) Marshek incorrectly assumed the gouge mark indicated the angle of the gravel truck at the moment the Yukon struck it; (3) Marshek calculated the gravel truck’s position based on an imprecise witness time estimate contrary to proper protocol; and (4) Marshek selectively relied on eyewitness line-of-sight testimony.
TXI claims Marshek’s theory — that the Yukon’s collision with the second axle created the gouge mark — lacks any factual foundation.
TXI also claims Marshek admitted during cross-examination that the gouge mark did nоt signify the initial collision with the
TXI next argues Marshek’s conclusion that the gouge mark reflects the gravel truck’s angle during the collision with its second axle is unreliable because Marshek did not rule out the possibility the gouge mark might have been created during subsequent impacts with the gravel truck’s tires and axles. An expert’s failure to rule out alternative causes of an incident may i’ender his opinion unreliable. Merrell Dow Pharm., Inc. v. Havner,
Marshek’s gouge-mark-angle theory finds support in the physical evidence. As Marshek explained, the Yukon weighs one-sixteenth of the gravel truck, making the collision analogous to a fly hitting a boulder. The gravel truck’s weight was distributed along the trailer, so when the Yukon impacted the gravel truck’s tires and axles it conformed to the trailer’s angle, gouging and scraping the road at an angle to the center line. Further, Mar-shek found additional support in the angle of the gravel truck’s brake marks. He testified the direction and length were consistent with the gouge mark angle and consistent with the gravel truck re-entering its eastbound lane. Moreover, Mar-shek tried to line- up the gouge mark and the brake marks using the assumption that the gravel truck remained in its eastbound lane. He concluded the brake marks would not line up unless Rodriguez executed a dangerous stеering maneuver likely resulting in a rollover or spillage that did not occur.
TXI also contends Marshek incorrectly estimated the gravel truck’s position by distorting Rodriguez’s testimony and ignoring accepted accident reconstruction protocol. Rodriguez testified that he turned the gravel truck to the right in an attempt to avoid the collision, but his estimates of how long he turned varied from “probably one second or less” to “two or three seconds, I think.” TXI argues Mar-shek distorts Rodriguez’s testimony by relying on these statements, yet rejecting Rodriguez’s assertion that he never crossed the center line. Further, it contends Marshek violated accident reconstruction protocol by relying primarily on Rodriguez’s time estimates instead of physical data.
Marshek’s reliance on Rodriguez’s statements does not distort Rodriguez’s testimony. In City of Keller v. Wilson, we said that “evidence cannot be taken out of context in a way that makes it seem to support a verdict when in fact it never did.”
Marshek’s use of Rodriguez’s testimony also did not violate accepted accident reconstruction protocol. According to TXI’s testifying expert, John Painter, an accident reconstruction specialist uses witness statements to help fill gaps after the specialist analyzes the physical data. Painter acknowledged eyewitness statements assist in reconstructing an accident, but implied such statements cannot be an expert’s primary data source. As discussed above, Marshek based the gravel truck’s position on the physical evidence— the gouge mark angle, the subsequent scrapes’ angles, and the gravel truck’s brake marks—using Rodriguez’s testimony solely to bolster his theory. Although his time estimates changed, Rodriguez consistently maintained that he turned to the right before the collision. Given the gravel truck’s speed, Marshek concluded that even with only one second of movement (Rodriguez’s lowest estimate), Rodriguez would have started thе turn from the Yukon’s lane.
TXI similarly complains Marshek distorts another witness’s testimony by crediting the witness’s statement that he did not see the Yukon until it passed the gravel truck’s trailer while ignoring the same witness’s assertion that he never saw the gravel truck cross the center line.
Lastly, TXI asserts that Marshek conceded his theory to be speculation when he admitted that “nobody knows what the steering was ... it’s all total speculation.” Read in context, however, this comment was directed at Painter’s use of a computer simulation, and its inability to consider
D. Conclusion
Expert testimony is unreliable when “ ‘there is simply too great an analytical gap between the data and the opinion proffered.’” Ledesma,
Reliability may be demonstrated by the connection of the expert’s theory to the underlying facts and data in the case. Two recent cases illustrate the point. Compare Ledesma,
In Ledesma, a metallurgical and mechаnical engineer testified extensively about his theory of how a u-bolt came to be under-torqued on the rear leaf spring and axle assembly of a Ford truck.
In Ramirez, the expert’s theory was that a bearing defect in the left rear wheel assembly of a Volkswagen Passat caused a loss of control when that wheel became detached from its axle.
Marshek’s testimony here, however, was neither eonclusory nor subjective. His observations, measurements, and calculations were, as in Ledesma, tied to the physical evidence in the case which likewise provided support for his conclusions and theory. Marshek’s expert testimony thus meets our standard for reliability, and the trial court therefore did not abuse its discretion by admitting the testimony.
III. The Illegal Immigrant Issue
TXI next argues that it was error to admit evidence of Rodriguez’s immigration status and his misi-epresentation of that status in order to live and work in this cоuntry. TXI complains that Rodriguez’s status as an illegal immigrant was irrelevant to any issue in the case. TXI asserts instead that Rodriguez’s status was imper-missibly used to inflame the jury and impeach Rodriguez’s credibility. In sum, TXI submits that repeated questions on this subject prejudiced its defense and effectively denied it a fair trial.
Hughes argues, however, that Rodriguez’s misrepresentations about his qualifications and experience as a commercial truck driver were relevant to claims of negligent hiring and negligent entrustment. In particular, he relies on the Federal Motor Carrier Safety Regulation Act (FMCSRA), which defines mandatory employment checks motor carriers must make when hiring new drivers. Under these regulations, a carrier must ensure that prospective drivers have a commercial license, have a working knowledge of English, аnd possess the training or experience to safely operate a commercial vehicle. 49 C.F.R. §§ 383.23, 391.11(b)(2)-(7), 391.15.
A. The Negligent-Hiring/Negligent-Entrustmenl Claim
In a negligent-hiring or negligent-entrustment claim, a plaintiff must show that the risk that caused the entrustment or hiring to be negligent also proximately caused plaintiffs injuries. See Fifth Club, Inc. v. Ramirez,
We have said a claim for negligent hiring or entrustment cannot lie if “[t]he risk that caused the entrustment to be negligent did not cause the collision,” Schneider,
B. Use of Immigration Status as Impeachment Evidence
The court of appeals concluded, however, that the evidence of Rodriguez’s immigration status was nevertheless admissible “to impeach his contrary trial testimony.”
Rule 801(e)(2)(A) provides that a party admission is not hearsay. Whether impeachment evidence is hearsay, however, has nothing to do with the relevancy requirement in Rules 401 and 402, or Rule 403’s requirement that evidence should be excluded if its prejudicial effect substantially outweighs any probative value. See Bay Area Healthcare Group, Ltd. v. McShane,
C. The Error
Although Rodriguez’s statements about his immigration status may have been offered for impeachment as pri- or inconsistent statements, they were not admissible for at least two different reasons. First, Rodriguez’s immigration status was clearly a collateral matter, that is, a matter that was “not relevant to proving a material issue in the case.” Poole v. State,
The immigration-related evidence was also inadmissible under Texas Rule of Evidence 608(b). This rule provides that “specific instances of the conduct of a witness, for the purpose of attacking ... the witness’s credibility, ... may not be inquired into on cross-examination of the witness nor proved by extrinsic evidence.” Tex.R. Evid. 608(b); see Tex.R. Evid. 404(b) (governing admissibility of prior acts). The rule “reflects a general aversion in Texas to the use of specific instances of conduct for impeachment.” David A. Schlueter & Robert R. Barton, Texas Rules of Evidence Manual § 608.02[3][b] at 537 (8th ed.2009). For over 150 years, “Texas civil courts have consistently rejected evidence of specific instances of conduct for impeachment purposes, no matter how probative of truthfulness.” Cathy Cochran, Texas Rules of Evidence Handbook 597 (7th ed.2007-08) (citing Boon v. Weathered’s Adm’r,
The only exception to this general prohibition is for certain criminal convictions. Texas Rule of Evidence 609 permits evidence of a criminal conviction for impeachment purposes if the conviction is not more than ten years old, is a felony or involves moral turpitude, and is more probative than prejudicial. Tex.R. Evid. 609(a). As the dissenting justice in the court of appeals observed, Rodriguez’s immigration conviction does not meet this criteria.
D. The Harm
The erroneous admission of evidence is harmless unless the error probably caused the rendition of an improper judgment. TexR.App. P. 44.1. Probable error is not subject to precise measurement, but it is something less than certitude; it is a matter of judgment drawn from an evaluation of “the whole case from voir dire to closing argument, considering
Although the trial court initially granted a motion in limine on immigration matters, it later reversed that ruling, admitting extensive testimony and extrinsic evidence concerning Rodriguez’s immigration status, including that he:
• was an undocumented Mexican alien who had illegally entered the United States on multiple occasions;
• invented a false Social Security number, which he used to apply for a Texas commercial driver’s license;
• falsely answered “no” in his deposition when asked if he had ever lied to obtain a Texas driver’s license;
• falsely answered “yes” on his TXI employment application when asked if he had the legal right to work in the United States;
• pleaded guilty to and was convicted of a misdemeanor immigration violation, serving four months in jail; and
• was previously deported and ordered not to return to the United States for ten years.
Rodriguez was also Hughes’s first called witness, and the first questions posed to him concerned his immigration status. There followed over forty references to Rodriguez’s status, including thirty-five to his status as an “illegal immigrant” and seven to his prior deportation. TXI representatives were also cross-examined regarding whether they owed a “duty” to the public to prevent an “illegal” from driving a TXI truck:
• “Do you think he is entitled to drive here if he’s illegally here?”
• “And you don’t think you оwe any duty ... to the public ... to the people who are driving up and down [Highway] 114 ... to decide whether he’s illegal or not?”
• “Mr. Rodriguez is still illegal in the United States, is he not? ... Will anybody ever turn him in, or will he just continue to drive for TXI?”
The investigating DPS trooper was asked whether she knew Rodriguez was “in this country illegally.” Additionally, there were thirty-two references to Rodriguez’s misconduct in using a “falsified” Social Security number, sixteen references to Rodriguez’s commercial driver’s license being “invalid” or “fraudulently obtained,” and seven references that Rodriguez was a “liar” who had lied on his TXI employment application. A TXI representative was pointedly questioned about whether Rodriguez might also have lied in denying responsibility for the accident:
• “Do you think Mr. Rodriguez lied to ... enter the United States?”
• “Are you telling this jury that you don’t know whether he lied to gеt into the United States?” “Now do you think that Mr. Rodriguez would lie when it relates to driving a rock truck?”
• “Did you ever consider ... and I want you to face this jury and tell this jury, did you ever consider whether Mr. Rodriguez might have lied about how this accident occurred?”
TXI complains that the repeated references to Rodriguez’s immigration problems and alleged misrepresentations were inflammatory and deliberately calculated to cause the jury to disbelieve Rodriguez.
TXI further objected to the trial court’s charge, complaining that the broad-form negligence question was misleading in this particular case and that the negligence question should instead include Hughes’s theory of the accident’s cause — that Rodri
Even assuming the immigration evidence had some relevance, its prejudicial potential substantially outweighed any probative value. Even in instances where immigration status may have limited probative value as to credibility, courts have held that such evidence is properly excluded for undue prejudice under Rule 403.
IV. Conclusion
Hughes faced a difficult conceptual burden. He had to convince a jury that a collision involving on-coming traffic, that unquestionably occurred in the eastbound lane of Highway 114, was the fault of Rodriguez, the eastbound driver. The task was all the more difficult because Rodriguez possessed a clean driving record and commercial driver’s licenses from both Texas and Mexico. Hughes had some evidence of how Rodriguez might have been at fault for the collision in his lane, but the issue was hotly contested.
For the reasons stated, the judgment of the court of appeals is reversed and the cause is remanded to the trial court for a new trial.
Justice WAINWRIGHT filed an opinion concurring in part and dissenting in part.
Notes
. Aurelio Melendez, who owned the gravel truck and leased it to TXI, was also sued and found liable by the jury under a negligent-entrustment theory. The court of appeals reversed the judgment against Melendez, and Hughes has not appealed that decision.
. These factors include the following: (1) the extent to which the theory has been or can be tested; (2) the extent to which the technique relies upon the subjective interpretation of the expert; (3) whether the theory has been subjected to peer review and/or publication; (4) the technique’s potential rate of error; (5) whether the underlying theory or technique has been generally accepted as valid by the relevant scientific community; and (6) the non-judicial uses which have been made of the theory or technique. Robinson,
. Marshek testified that he calculated the relative positions of the vehicles and approximately where the Yukon was on the road when Hughes made her decision to turn left by using the vehicles’ speeds and a standard perception time factor. Marshek theorized the gravel truck was still moving into the westbound lane when Hughes made her eva
. TXI’s accident reconstruction expert and Marshek dispute whether the Yukon’s rim created a gouge mark when the left front tire impacted with the gravel truck’s tire at the second or fourth axle. The difference is significant because only a gouge produced by the impact at the second axle would be consistent with the gravel truck crossing the center line and causing the accident.
. This witness was a passenger in the Ford pickup that was following the gravel truck and ultimately collided with the Yukon. According to Painter, TXI’s expert who performed a line-of-sight analysis of the accident scene, the witness would have seen the Yukon before it careened off the rear of the gravel truck's trailer. The witness testified, however, that he did not see the collision and did not see the Yukon until it came off the trailer. By his own estimate, the witness was about 300 yards behind the gravel truck. The witness also qualifiеd his testimony about the gravel truck not crossing the center line by saying "[n]ot to my knowledge” multiple times. In City of Keller, we said "courts must view the evidence in the light favorable to the verdict, crediting favorable evidence if reasonable jurors could, and disregarding contrary evidence unless reasonable jurors could not.”
. Because the witness testified he was watching the gravel truck and that he did not see the Yukon until it cleared the trailer, his testimony suggests the gravel truck was over the center line, blocking his view of the impacts.
. See Mischalski v. Ford Motor Co.,
. See Maldonado v. Allstate Ins. Co.,
. See, e.g., State v. Ferguson,
Concurrence Opinion
concurring in part and dissenting in part.
The vehicle accident in this case occurred in the gravel truck’s eastbound lane when the westbound Yukon sport utility vehicle crossed the center line of the highway. This is undisputed. All five eyewitnesses in three separate vehicles who spoke to the question, some from better vantages than others, testified that they never saw the gravel truck in the westbound lane. Yet the claimant’s expert opined that the gravel truck driver caused the accident. It allegedly crossed into the westbound lane, forced the Yukon to move into the eastbound lane in a defensivе maneuver, and then returned to the eastbound lane to cause the collision. The expert reviewed and discussed physical evidence in the form of gouge marks on the road, collision damage to both vehicles, brake mark angles, and speed and braking information from the Yukon’s black box. I have serious concerns about the admissibility of the expert’s causation testimony because, among other reasons, the expert has not sufficiently addressed the eyewitness testimony. See, e.g., Brooke Group Ltd. v. Brown & Williamson Tobacco Corp.,
