Opinion

Sterling v. United States

Court
District Court, E.D. New York
Filed
Sep 29, 2025
Cited by
0 cases
Authority
More cited than 35.0%

finding the defendant’s proposed accident reconstruction expert to be qualified and his proffered opinions reliable

How later courts described this case

  • finding the defendant’s proposed accident reconstruction expert to be qualified and his proffered opinions reliable
  • “Expert witnesses are unnecessary when the factfinder is ‘as capable of comprehending the primary facts and of drawing correct conclusions from them as are witnesses possessed of special or peculiar training.’”

Written by the judges who cited it.

The opinion

UNITED STATES DISTRICT COURT

EASTERN DISTRICT OF NEW YORK

_____________________

No 23-CV-4830 (RER) (LB)

_____________________

TYRONE STERLING

VERSUS

UNITED STATES OF AMERICA

___________________

MEMORANDUM & ORDER

___________________

RAMÓN E. REYES, JR., District Judge:

Plaintiff Tyrone Sterling brings this action against the United States of America

(“the government”) under the Federal Tort Claims Act (“FTCA”), 28 U.S.C. §§ 1346(b),

2671 et seq., alleging that a government employee negligently caused a collision between

a government car and his Fly-7 e-bike. (ECF No. 1 (“Compl.”) at ¶¶ 41–43; Proposed

Pretrial Order, ECF No. 21 (“Pretrial Order”) at 3–4). The Court held a one-day bench trial

on the issue of liability on February 3, 2025. (See Minute Entry, ECF. No. 26). After the

trial, the parties submitted proposed findings of facts and conclusions of law, and

oppositions. (ECF Nos. 29–32).

After considering the evidence introduced at trial, the arguments of counsel, and

the applicable law, the Court sets forth the following findings of fact and conclusions of

law pursuant to Federal Rule of Civil Procedure 52. The Court concludes that Plaintiff has

not met his burden to prove that the government is liable for this collision.

FINDINGS OF FACT

The following section constitutes the Court's findings of fact pursuant to Federal

Rule of Civil Procedure 52(a)(1). These findings of fact are drawn from witness testimony

at trial and the parties’ trial exhibits. To the extent that any finding of fact reflects a legal

conclusion, it shall be deemed a conclusion of law to that extent, and vice versa.

I. The October 2, 2020, Collision

On the clear-skied afternoon of October 2, 2020, plaintiff Tyrone Sterling (“Plaintiff”

or “Sterling”) and Federal Bureau of Investigation (“FBI”) special agent Sean Bartnik

(“Agent Bartnik” or “Bartnik”) collided in the intersection of Atlantic Avenue and Albany

Avenue in Brooklyn, New York. (Pretrial Order at 8). Atlantic Avenue is a two-way highway

with three lanes each for eastward and westward travel. (See ECF No. 27, Ex. L).

Elevated tracks for the Long Island Railroad (LIRR) bisect Atlantic Avenue and beneath

the tracks is an underpass through which westward drivers may make a protected left

turn onto Albany Avenue. (See ECF No. 27, Ex. L; ECF No. 27, Ex. M; ECF. No. 27, Ex.

Y). Albany Avenue permits southbound travel only. (See ECF No. 27, Ex. L). Before the

trial, the parties stipulated to several facts. (Pretrial Order at 8–9). Here, the proverbial

rubber meets the road on one issue: which party had the green light? Each party answers

that he had the green light. (Trial Transcript (“(Tr.”) 31:11–32:15; 77:7–16; see also ECF

No. 27, Ex. K). Plaintiff, however, bears the burden of proof.

II. The Fact Witnesses

a. Tyrone Sterling

Sterling testified that before the accident, he left his girlfriend’s house in Downtown

Brooklyn and headed towards his mother’s home in East New York. (Tr. 20:7–23). To

make the trip, Plaintiff borrowed an e-bike from a friend. (Tr. 21:13–17). Sterling then

traveled eastward with another friend who rode his own e-bike. (Tr. 24:25–25:2). He

testified that he was familiar with this route and that, on this day, traffic was light due to

the COVID-19 lockdown having only recently been lifted. (Tr. 25:20–26:3; 26:7–13). As

Plaintiff and his friend approached the relevant intersection, Sterling testified that he was

traveling eastward on Atlantic Avenue, in the rightmost lane. (Tr. 26:14–27:5).

During his ride down Atlantic Avenue, Plaintiff noticed other vehicles traveling

beneath the LIRR underpass, and, as he approached Albany Avenue, he noticed Agent

Bartnik’s car, a Hyundai Sonata, in the underpass’s left turn lane. (Tr. 31:2–8). Sterling

then looked up, saw that he had a green light, and proceeded to drive at approximately

20 miles per hour. (Tr. 31:11–21).

Plaintiff testified that there were no vehicles to his left as he approached the light

at the Atlantic-Albany intersection. (Tr. 30:14–18). He did see other vehicles in front of

him going through the light. (Tr. 27:6–10; 31:22–32:6). None were stopped. (Tr. 31:22–

32:6). Sterling’s friend also drove about 50 to 100 feet ahead and passed through the

intersection. (Tr. 27:11–16). After checking the traffic light and noting that it was green,

Plaintiff noticed that Bartnik “darted” out of the underpass’s left turn lane. (Tr. 32:7–15).

Plaintiff stated that he squeezed the brakes on the handlebars of the e-bike but did not

have enough time to avoid Bartnik, so he braced for impact and collided into the Sonata’s

front passenger door. (Tr. 33:5–34:6; 35:16–36:13; ECF. 27, Ex. A). On direct

examination, Plaintiff reiterated that he noticed the government’s car around the same

time that his friend drove through the traffic light. (Tr. 32:12–24). Sterling therefore placed

himself about 50 to 100 feet from the intersection when he first noticed Bartnik stopped

in the government’s car in the underpass’s left turn lane. Id. After the collision, bystanders

helped Plaintiff move the e-bike out of the street. (Tr. 37:21–38:8). Plaintiff later spoke to

at least one police officer before being taken to a hospital in an ambulance. (Tr. 40:13:18).

Upon cross-examination, the government questioned Plaintiff’s credibility in

recalling the model e-bike he drove and its maximum speed capacity. During direct,

Plaintiff claimed that he drove an e-bike that was older than a more current model named

the Fly-7. (Tr. 22:4–22). On cross-examination, however, Plaintiff acknowledged that an

accident report he filed claimed that the front wheel of a Fly-7 e-bike was damaged. (Tr.

43:6–44:20). The government later, during Sterling’s cross-examination of Richard

Hermance, cited to the parties’ stipulated facts to show that Plaintiff agreed that he had

driven a Fly-7 model e-bike. (Tr. 201:11–203:8; Pretrial Order at 8). Later during cross-

examination, the government asked if Sterling’s e-bike went 20–25 miles per hour, and

Plaintiff responded that it went 15–20 miles per hour. (Tr. 47:8–15). The government then

read two lines from Sterling’s deposition:

“Question: Do you know how fast it goes, the maximum?”

“Answer: 20 to 25 miles per hour.”

(Tr. 47:16–48:25). Lastly, during cross-examination, Plaintiff confirmed that his testimony

was that Bartnik traveled from the underpass’s turn lane to the collision point along the

rightmost lane of Atlantic Avenue’s eastbound traffic in about one second. (Tr. 60:6–61:7).

b. Agent Bartnik

Agent Bartnik testified that before the collision, he left his workplace in Kew

Gardens, Queens and drove the government-issued Sonata towards his home in Sunset

Park, Brooklyn. (Tr. 69:6–70:19). He described traffic that day as being moderate-to-

heavy. (Tr. 72:14–18). He traveled westbound on Atlantic Avenue, but, before he reached

the intersection with Albany Avenue, he first drove through the intersection of Atlantic

Avenue and Troy Avenue. (Tr. 75:15–76:5). There, Agent Bartnik entered the turn lanes

beneath the underpass, drove up to the stop line, and stopped the car as he had a red

arrow traffic light. (Tr. 75:17–76:5). No other vehicles were stopped in front of Agent

Bartnik. (Tr. 77:2–6).

Agent Bartnik then testified that once the red arrow switched to a green arrow, he

checked the intersection for traffic. (Tr. 77:7–12). Noticing only stopped traffic in all

Atlantic Avenue’s eastbound lanes, he began to turn left onto Albany Avenue. (Id.) He

stated that he began moving into the intersection “no more than a few seconds” after the

light turned green. (Tr. 77:13–16). As he made the left turn, Agent Bartnik did not drive

faster than 20 miles per hour. (Tr. 81:12–15). Yet Agent Bartnik did not detect Sterling

approaching until Bartnik was “almost all the way through the intersection.” (Tr. 77:22–

78:4; 103:8–11). When he noticed that a “moped” was approaching, Agent Bartnik “gave

a little blip of the gas” to get out of the way but was ultimately unable to avoid the collision.

(Tr. 77:22–78:4). Indeed, Agent Bartnik testified that less than a second passed between

his noticing Plaintiff and the collision. (Tr. 80:12–17). Agent Bartnik did not see any other

e-bikes drive through the intersection before Sterling after the left turn signal became

green. (Tr. 80:24–81:7).

After the collision, Agent Bartnik exited the Sonata, took pictures of the scene, and

called 9-1-1. (Tr. 82:24–83:6; 84:5–11; 86:5–12; 88:8–15; 89:17–24). He testified that

both parties spoke to a police officer. (Tr. 90:4–9). EMS personnel arrived later and spoke

to Plaintiff but not to Agent Bartnik. (Tr. 90:12–21).

III. The Government’s Expert Witness – Richard Hermance

Richard Hermance (“Hermance”) offered testimony as an expert witness in the field

of accident reconstruction. (Tr. 119:17–22). Hermance is currently a principal of the

consulting firm Collision Research, LTD. (See ECF No. 27, Ex. W (“Hermance CV”)). He

has performed accident reconstruction and analysis for over forty years and has taught

numerous courses in accident reconstruction. (Tr. 115:6–8; 117:8–23; Hermance CV).

He also holds separate associate’s degrees in both electrical engineering technology and

criminal justice from SUNY-Ulster. (Tr. 116:8–13; See Hermance CV). Lastly, Hermance

is a member of professional organizations such as the International Association of

Accident Reconstruction Specialists, the National Association of Traffic Accident

Reconstructionists and Investigators, and the New York Statewide Traffic Accident

Reconstruction Society, Inc. (Tr. 115:25–116:7; Hermance CV). The Court accepted Mr.

Hermance as a qualified expert on accident reconstruction. (Tr. 120:4–5).

Hermance presented his expert testimony using a demonstrative PowerPoint

presentation in which he argued eight main points: 1) Agent Bartnik’s left turn signal was

a protected green signal; 2) Agent Bartnik was traveling at approximately 13–15 miles per

hour at the time of impact; 3) Agent Bartnik arrived in the intersection first; 4) immediately

before the collision, Sterling drove an e-bike eastbound on Atlantic Avenue on the far-

right side of traffic; 5) the collision occurred on the south-east side of the Atlantic Avenue-

Albany Avenue intersection; 6) Plaintiff’s e-bike “t-boned” Agent Bartnik’s Sonata on the

right passenger side; 7) Agent Bartnik could not have avoided the accident; and 8)

Sterling could have avoided the accident. (Tr. 120:7–20; 121:6–123:25; (ECF No. 28 at

2–9)). On direct, Hermance also testified to being familiar with accidents involving two-

wheeled vehicles and to having reconstructed approximately five or six hundred accidents

involving such vehicles. (Tr. 115:15–20). As explained further below, the Court excludes

some of Hermance’s opinions as they go to the ultimate legal issue of liability or can be

adequately testified to by other percipient witnesses. The Court does, however, find that

the questions about Bartnik’s acceleration rate, the speed the parties drove prior to and

during the collision, the amount of time each party spent in the intersection before the

collision, and the distance Bartnik traveled after the collision to be questions within

Hermance’s expertise to which a layperson cannot adequately testify.

Hermance first described how he prepared for his reconstruction of the accident.

He testified that he examined the police report, FBI report, photographs of the scene

taken that day, specifications of each vehicle and crash tests, an exemplar Fly-7 e-bike,

and the depositions of Plaintiff and Agent Bartnik. (Tr. 124:1–14). Hermance then used

Google Pro aerial and street view imagery along with the Google Pro measuring tool to

assist his reconstruction and analysis of the accident. (Tr. 124:14). Hermance then, on

direct, went through the methodologies he used to arrive at his opinions.

To calculate the speed of Agent Bartnik’s Sonata, Hermance conducted an “energy

dissipation analysis” and an “acceleration analysis,” which can also be called a “time-and-

distance analysis.” (Tr. 135:1–13). To conduct the time-and-distance analysis, Hermance

used the mathematical formula of the square root of the original speed plus the product

of 30 times distance times friction or acceleration. (Tr. 135:16–19). This formula should

reveal how fast a vehicle traveled from the point of take off to the point of impact when

moving at a normal acceleration rate. (Tr. 135:23–136:1). The square root of the original

speed would be zero since Agent Bartnik started in a stopped position. (Tr. 136:2–4).

Hermance then testified that the number 30 is used to ensure that the product is converted

into miles per hour instead of feet per second. (Tr. 136:5–7). For distance, Hermance

used Google Earth as a measurement tool and determined that Agent Bartnik traveled

about 40 feet from the stop line to the point of impact. (Tr. 136:8–9, 17–19). For the friction

or acceleration factor, Hermance first used 4.8 for the acceleration rate, as it is the

industry standard for a passenger car that takes off at less than 20 miles per hour. (Tr.

137:10–138:4). Then, to convert the acceleration rate to an acceleration factor that is

used in the formula, Hermance divided 4.8 by 32.2 (force of gravity) to arrive at an

acceleration factor of .15. (Tr. 138:5–22). Once each number is plugged in, the time-and-

distance equation calculates that Agent Bartnik traveled at 13.5 miles per hour, which

Hermance rounded up to 14 miles per hour. (Tr. 138:23–139:5).

Hermance then used the previously mentioned energy dissipation analysis to

check if his time-and-distance calculation was correct. (Tr. 139:6–10). This analysis

essentially calculates how much kinetic energy a vehicle contains to determine its speed.

(Tr.139:11–23). For this analysis, one must find the square root of the product of 30 times

distance times friction/acceleration. (Tr. 139:24–140–8). One calculates the distance by

measuring the deceleration rate or the distance a vehicle skids before coming to a

complete stop. (Tr. 141:1–2). Here, Hermance measured the distance from the point of

impact to the point where Bartnik’s Sonata came to a complete stop at 10 feet. (Tr. 141:4–

22). Friction was also calculated differently for this formula. Here, Hermance used the

number .7, as that is the industry standard for vehicles traveling on a dry roadway. (Tr.

142:14–143:6). With these numbers, Hermance determined that Agent Bartnik was

driving the Sonata at a speed of about 14.5 miles per hour upon impact with Sterling. (Tr.

143:7–10).

Hermance next testified as to how he determined that Agent Bartnik entered the

intersection first. (Tr. 144:13–19). For his methodology, Hermance testified that he used

the normal acceleration rate of a car and time-and-distance calculations. (Tr. 145:4–9).

To assist him in making those calculations, Hermance used photos of the accident and

superimposed those photos on an aerial view of the intersection from Google Maps. (Tr.

145:10–146:8). He also used the manhole cover that was located within the southern

crosswalk of Albany Avenue to assist his distance measurements. (Id.) Hermance first

determined that Agent Bartnik traveled approximately 41 feet from the takeoff point to the

point of impact. (Tr. 147:7–12). Hermance then used another mathematical formula to

determine how many seconds Agent Bartnik would have been in the intersection. (Tr.

146:9–147:1). Hermance used .249 as a conversion factor to convert the answer into

seconds and multiplied that conversion factor by the square root of the quotient of the

distance in feet that Bartnik traveled divided by the acceleration or friction rate and then

added that result to Bartnik’s perception-reaction time. (Id.) Here, the distance would be

41 feet, the acceleration rate would be the standard 4.8, and the perception-reaction time

would be zero since Bartnik was initially at a stopped position. (Tr. 147:7–148:2).

Hermance thus determined that Agent Bartnik would have been in the intersection for

about 4.1 seconds. (Tr. 148:3–9). Hermance even performed this equation with an

assumption that Bartnik accelerated rapidly. (Tr. 148:10–149:2). Under that assumption,

the industry standard acceleration rate would increase from 4.8 to 9.7. (Tr. 148:14–18).

Hermance then testified that Bartnik would have been in the intersection for 2.9 seconds

if he had accelerated rapidly. (Tr. 148:24–149:2). Hermance therefore concluded that

Bartnik would have defied the laws of physics if he would have driven from the stop lane

to the point of impact in one second. (Tr. 149:3–6; 192:19–193:16).

Hermance also opined on how long Plaintiff would have been in the intersection

before the collision. (Tr. 149:7–9). Since Sterling was moving at a constant rate of speed

rather than taking off from a stopped position, Hermance used a different formula:

Plaintiff’s distance traveled in feet was divided by velocity in feet per second to equal time

as measured in seconds. (Tr. 149:10–150:5). For distance, Hermance measured the

distance in feet from the west side of the intersection to the point of impact and determined

that the distance was 12 feet. (Tr. 150:9–16). For velocity, Hermance used 15 miles per

hour—the lower end of Sterling’s averred range of speed—and then multiplied that

number by a conversion factor of 1.46 to arrive at 21.9 feet per second. (Tr. 150:17–

151:10). With a distance of 12 feet and a velocity of 21.9 feet per second, Hermance

opined that Plaintiff traveled in the intersection for about .54 seconds at 15 miles per hour

before impact. (Tr. 151:11–14). From these calculations, Hermance testified that Sterling

had time to react and avoid the collision, but Agent Bartnik did not. (Tr. 151:15–152:4;

156:18–157:4; 163:24–164:3).

Hermance also spent a significant amount of time discussing Agent Bartnik’s ability

to notice Plaintiff approaching on the e-bike and likely reaction time. (Tr. 162:12–163:16;

220:20–223:9). The Court, however, finds that such testimony on reaction times and the

possible effects of seeing another e-bike drive through the intersection before Sterling

falls outside of Hermance’s expertise and therefore excludes Hermance’s testimony on

how quickly Agent Bartnik would have noticed Plaintiff approaching on an e-bike and how

quickly Bartnik would have been able to react after noticing Sterling. See Moncayo v.

United Parcel Service, Inc., No. 23-161-cv, 2024 WL 461694, at *1 (2d Cir. Feb. 7, 2024)

(summary order) (affirming the District Court’s ruling that opinions on psychological and

human factors, such as whether a driver was distracted, fell outside of the expert’s fields

of expertise—engineering and accident reconstruction).

The Court also excludes Hermance’s testimony about whether Agent Bartnik had

a protected green light, (Tr. 121:9–122:11; 173:3–11), as that testimony mixes with the

ultimate legal question of whether Bartnik negligently caused the collision. Under New

York State traffic law, if a driver runs a red light, that party is per se negligent. VTL §

1111(d)(1); Callahan v. Glennon, 193 A.D.3d 1029, 147 N.Y.S.3d 665, 666 (2d Dep’t

2021) (citing Barbieri v. Vokoun, 72 A.D.3d 853, 856 (2d Dep’t 2010)) (citations omitted).

Therefore, Hermance’s testimony that Bartnik had a protected green light implies that

Plaintiff was per se negligent. For similar reasons, the Court does not consider

Hermance’s opinions that Agent Bartnik could not have avoided the collision, but Sterling

could have avoided the collision—though the Court does find Bartnik’s underlying

calculations for those two opinions to be credible and within his area of expertise.

The Court also does not consider Hermance’s testimony on where Sterling was

traveling on Atlantic Avenue, the location of the accident, or the type of impact between

the Sonata and the e-bike because such information may be testified to by a layperson.

(Tr. 152:5–156:17); see also United States v. Thomas, 214 F. Supp. 3d 187, 191

(E.D.N.Y. 2016) (“Expert witnesses are unnecessary when the factfinder is ‘as capable

of comprehending the primary facts and of drawing correct conclusions from them as are

witnesses possessed of special or peculiar training.’”) (quoting Salem v. U.S. Lines Co.,

370 U.S. 31, 35 (1962)) (citations omitted). Indeed, the parties stipulated to some of these

facts in the pretrial order. (See ECF No. 21 at 8–9).

In sum, the Court finds that Hermance credibly testified that Agent Bartnik

accelerated from the stop line at a normal acceleration rate, that Bartnik traveled up to 14

miles per hour when making his left turn, that Bartnik drove in the intersection for about

4.1 seconds before the collision, that Plaintiff drove in the intersection for about .54

seconds before the collision, and that Bartnik traveled about 10 feet after the collision

before coming to a complete stop.

IV. Credibility Determinations for Fact Witnesses

The plaintiff shoulders the burden to prove their claims by a preponderance of the

evidence. See Moudis v. United States, No. 20-CV-05674 (JMA) (AYS), 2024 WL

3063793, at *2 (E.D.N.Y. June 20, 2024). Courts often describe this burden as persuading

the fact finder to believe the facts supporting each element are more likely to exist than

not exist. See Metro. Stevedore Co. v. Rambo, 521 U.S. 121, 137 n. 9 (1997) (citations

omitted). In other words, where “the evidence is evenly balanced,” a plaintiff falls short.

Kasokow v. New Rochelle Radiology Assocs., P.C., 274 F.3d 706, 731 (2d Cir. 2001);

accord United States v. Gigante, 94 F.3d 53, 55 (2d Cir. 1996). Following a bench trial,

the court has considerable discretion to determine the testimony that should and should

not be credited, and to what extent. See Moudis, 2024 WL 2063793, at *3 (first citing

Diesel Props S.r.l. v. Greystone Business Credit II LLC, 631 F.3d 42, 52 (2d Cir. 2011),

then quoting Cont'l Ins. Co. v. Lone Eagle Shipping (Liber.), 134 F.3d 103, 104 (2d Cir.

1998)).

The Court ultimately finds Agent Bartnik’s testimony to be credible, and Sterling’s

testimony about the collision to be incredible. Agent Bartnik’s testimony aligns with

common sense and the accepted expert opinions of Hermance. Bartnik was the first car

at the underpass’s traffic light, and Plaintiff failed to present any evidence that Bartnik

was distracted for the entire period of a protected green turn signal and then only began

driving once the light had turned from green to red. Bartnik’s testimony that he accelerated

from his stopped position at a normal, rather than a rapid, acceleration rate also aligns

with the evidence that Bartnik stopped about 10 feet from the point of impact. Finally,

Bartnik’s testimony that other cars were present in the eastbound lanes of Atlantic Avenue

provides a more compelling explanation as to why neither driver adjusted their speed or

direction in a timely manner to avoid the collision.

While the Court credits Sterling’s testimony as to the fact that he traveled eastward

down Atlantic Avenue after leaving his girlfriend’s home in Downtown Brooklyn to visit

and care for his mother in East New York, the Court does not credit the remainder of his

testimony. Plaintiff presented conflicting testimony as to the speed he was traveling down

Atlantic Avenue. At the bench trial, Sterling testified that he was traveling 15–20 miles per

hour. However, on cross-examination, Plaintiff conceded to testifying at his deposition

that he traveled at 20–25 miles per hour. Plaintiff also testified that he did not drive a Fly-

7 model e-bike. Yet, on cross-examination, Plaintiff had to concede that he not only signed

an accident report where he stated that he drove a Fly-7 but that he stipulated in a pretrial

order to the fact that he drove a Fly-7 on October 2. Further, the Court does not find

credible Sterling’s testimony that he drove on Atlantic Avenue, among light traffic, saw

the Sonata, checked the traffic light, and then, in the next second, saw the Sonata

“darting” into the intersection in front of Plaintiff with no time for Sterling to react. Put

simply, the Court is not persuaded that Plaintiff would have lost the Sonata from his field

of vision from checking the traffic light, especially if traffic was light and no other vehicles

blocked Sterling’s field of vision. Even if Bartnik drove into the intersection when Plaintiff

still had a green light, then, assuming that Sterling was 50 to 100 feet from the intersection

and was driving 15 to 20 miles per hour, Plaintiff would have been able to react by slowing

down and moving to a lane to his left to possibly avoid the collision. The Court also credits

Hermance’s testimony over Sterling’s that Bartnik could not—within the laws of physics—

have traveled from a stopped position to the point of impact in one second or even in

under two seconds.

V. Final Factual Findings

The Court therefore makes the following findings of fact: on October 2, 2020,

before the vehicle collision, Plaintiff traveled eastward on Atlantic Avenue from Downtown

Brooklyn to East New York to visit his mother. Agent Bartnik first traveled westward on

Atlantic Avenue from his place of employment in Kew Gardens as part of his route to go

home in Sunset Park. Bartnik then drove into the underpass after passing Troy Avenue

and stopped at the traffic light at the Atlantic Avenue-Albany Avenue intersection planning

to turn left into southbound Albany Avenue. Sterling drove on Atlantic Avenue around 20

miles per hour following a friend who was also traveling by e-bike. Plaintiff noticed the

Sonata in which Bartnik drove around the same time that Sterling’s friend drove through

the traffic light. At that point, Plaintiff was between 50 to 100 feet away from the

intersection. Agent Bartnik began driving into the intersection and making a left turn once

he had a protected left turn signal. Sterling, missing the green light, attempted to run the

red light and beat oncoming traffic but instead “t-boned” Agent Bartnik. Plaintiff stopped

at the point of impact and debris from the e-bike broke off and landed at that location.

Agent Bartnik continued accelerating when he noticed an oncoming object to his left and

then braked after the collision and stopped about 10 feet from the point of impact. Agent

Bartnik exited the Sonata, took pictures of the vehicles and the area of impact and then

called 9-1-1. Both Sterling and Agent Bartnik spoke to police officers about the collision,

and Plaintiff was then taken to the hospital by an ambulance.

CONCLUSIONS OF LAW

After considering the trial testimony and all the evidence, the Court concludes that

Sterling has failed to carry his burden to show by a preponderance of the evidence that

Agent Bartnik negligently caused the collision.

I. Hermance’s Expert Testimony is Reliable

During the trial, Sterling’s counsel aggressively cross-examined Hermance and

challenged many of his opinions and assumptions. (See Tr. 177:2–230:14). In his post-

trial submissions, Sterling appears to challenge the reliability of Hermance’s testimony

and opinions. (Pl’s Proposed Findings of Fact and Conclusions of Law, ECF No. 30 at ¶¶

27–49; Pl’s Response to Defendant’s Proposed Finding of Facts and Conclusions of Law,

ECF No. 32 at ¶¶ 2–7). For example, Sterling argues that “close analysis of [Hermance’s]

testimony shows his account was based almost exclusively on the use of facts cherry-

picked from the defendant’s own account, and was replete with unsupported assumptions

chosen specifically to buttress the defendant’s position.” (ECF No. 30 at ¶ 27). Because

I conclude that Hermance’s trial testimony was reliable and relevant, except for his legal

conclusions, Hermance's expert testimony is admitted.

The court must ensure that a qualified1 “expert’s testimony both rests on a reliable

foundation and is relevant to the task at hand.” Daubert v. Merrell Dow Pharmaceuticals,

Inc., 509 U.S. 579, 597 (1993). “In this inquiry, the district court should consider the indicia

of reliability identified in Rule 702, namely, (1) that the testimony is grounded on sufficient

facts or data; (2) that the testimony ‘is the product of reliable principles and methods’; and

(3) that ‘the witness has applied the principles and methods reliably to the facts of the

case.’” Amorgianos v. Nat'l R.R. Passenger Corp., 303 F.3d 256, 265 (2d Cir. 2002)

(internal quotation marks and citation omitted) (quoting Fed. R. Evid. 702). In analyzing

whether proffered expert testimony is relevant, the trial court should look to the standards

of Rule 401, i.e., whether it “‘ha[s] any tendency to make the existence of any fact that is

of consequence to the determination of the action more probable or less probable than it

would be without the evidence.’” Campbell v. Metro. Prop. & Cas. Ins. Co., 239 F.3d 179,

184 (2d Cir. 2001) (quoting Fed. R. Evid. 401).

Federal and state courts have also long found accident reconstruction analysts to

be acceptable expert witnesses in vehicle collision personal injury actions. See Dooley v.

United States, 577 F. Supp. 3d 229, 233 (S.D.N.Y. 2021) (citing Haines v. Webb, 2014

WL 12828962, at *10 (N.D. Ga. Sept. 26, 2014)), aff’d, 83 F.4th 156 (2d Cir. 2023); see

also Boykin v. Western Express, Inc., No. 12-CV-7428 (NSR) (JCM), 2015 WL 539423,

at *6 (S.D.N.Y. Feb. 6, 2015) (collecting cases); Robinson v. District of Columbia, 75 F.

Supp. 3d 190, 197–201 (D.D.C. 2014) (finding the defendant’s proposed accident

reconstruction expert to be qualified and his proffered opinions reliable); DeSisto v. New

1 Sterling does not challenge Hermance’s qualifications to testify as an expert in accident reconstruction.

York City Transit Auth., 151 A.D.2d 639, 640 (2d Dep’t 1989). Hermance, specifically, has

often been accepted as an accident reconstruction expert witness. See e.g., Salahuddin

v. United States, 564 F. Supp. 3d 75, 81–83 (E.D.N.Y. 2021); Smith v. United States, 752

F. Supp. 3d 242, 257–58 (D. Mass. 2024); McChristion v. Sun Life Assurance Co. of

Canada, No. 1:121-CV-332, 2022 WL 18107287, at *6 (W.D. Tex. Oct. 24, 2022); DiPirro

v. United States, 43 F. Supp. 2d 327, 337 (W.D.N.Y. 1999). Here, the Court has already

excluded portions of Hermance’s testimony for falling outside the scope of his expertise

or for covering issues within the knowledge of fact witnesses. For the remaining disputed

portions of Hermance’s testimony, the Court finds that they are reliable.

Plaintiff did not argue that Hermance’s methodology “failed to demonstrate the

rigor” used by other accident reconstructionists or that Hermance’s formulas were not

generally accepted within his field of expertise. Rather, Plaintiff first asked the Court to

“look past all the obfuscations and complex formulas.” (ECF. No. 30 ¶ 32). Plaintiff then

argued that Hermance’s use of the industry standard acceleration rate belied notions of

“common sense and real-life experience.” (Id. ¶ 36). Plaintiffs remaining protestations fell

under categories of either disagreeing with the results of Hermance’s calculations or

arguing that Hermance included erroneous assumptions in his calculations. (Id. ¶¶ 38–

41). Sterling’s last argument about erroneous assumptions is his strongest, but all remain

unpersuasive.

The Court must look to the reliability of the “principles and methodology” used, not

the result of the methodology, to determine if an expert’s opinion is reliable. Salahuddin,

564 F. Supp. 3d at 84 (quoting Amorgianos, 303 F.3d at 266). Expert opinions are often

needed because they reveal that common sense is misleading or falls short. The Court

therefore cannot find that Hermance’s opinions should be excluded because they conflict

with common sense ideas about how vehicles accelerate. Rather, Plaintiff needed to

show that Hermance did not use an industry standard method to measure the

acceleration rate. Sterling failed to do so. Indeed, Hermance also conducted his analysis

under Plaintiff’s assumption that Hermance accelerated rapidly. (Tr. 148:10–149:2).

Lastly, Hermance explicitly stated that he disregarded many of Plaintiff’s allegations

because they violated the laws of physics, (Tr. 225:21–23), and Plaintiff failed to show

that Hermance’s assertion was erroneous. The Court therefore finds that Hermance’s

expert testimony was reliable.

II. Liability

The FTCA waives the United States’s sovereign immunity and permits personal

injury claims against it for the negligence of government employees acting within the

scope of their employment. 28 U.S.C. § 1346(b)(1); see Liranzo v. United States, 690

F.3d 78, 84–85 (2d Cir. 2012). Under the FTCA, liability of the United States for the

negligence of its employees acting within the scope of employment is determined “in

accordance with the law of the place where the act or omission occurred.” 28 U.S.C. §

1346(b)(1). Here, the accident occurred in New York; thus, New York law applies. E.g.,

Avlonitis v. United States, No. 16-CV-2521 (PKC) (SMG), 2020 WL 1227164, at *5

(E.D.N.Y. Mar. 13, 2020).

Under New York law, negligence requires a plaintiff to establish by a

preponderance of the evidence that the defendant (1) owed a duty to the plaintiff, (2)

breached that duty, and (3) the breach was the substantial cause of plaintiff’s injury.

Hodder v. United States, 328 F. Supp. 2d 335, 341 (E.D.N.Y. 2004) (citation omitted); see

also Ferreira v. City of Binghamton, 38 N.Y.3d 298, 308 (2022) (quoting Solomon v. City

of New York, 66 N.Y.2d 1026, 1027 (1985)) (citations omitted). New York’s Vehicle and

Traffic Law (“VTL”) imposes a duty on drivers to exercise reasonable care in the operation

of their vehicles, considering “actual and potential dangers existing from weather, road,

traffic, and other conditions.” Hodder, 328 F. Supp. 2d at 341 (citations omitted)). All

drivers in New York are held to a four-part duty: “(1) to maintain a reasonably safe rate of

speed; (2) to have their automobiles under reasonable control; (3) to keep a proper

lookout, under the circumstances then existing, to see and be aware of what was in their

view; and (4) to use reasonable care to avoid an accident.” Id. (internal citations omitted);

see also Daniels v. Amazon.com Inc., No. 20-CV-3708 (MKB) (RML), 2021 WL 4272542,

at *4 (E.D.N.Y. Sept. 21, 2021) (same). In addition, drivers commit a per se act of

negligence if they violate the provisions of the VTL. Desio v. Cerebral Palsy Transport,

Inc., 121 A.D.3d 1033, 1034 (2d Dep’t 2014); Burghardt v. Cmaylo, 40 A.D.3d 568, 569

(2d Dep’t 2007); Christian Sanchez v. U.S., No. 13-CV-2536 (JPO), 2015 WL 667521, at

*2 (S.D.N.Y. Feb. 17, 2015) (citing Gray v. Wackenhut Servs., Inc., 446 F.App’x 352, 354

(2d Cir. 2011) and Jones v. Radeker, 32 A.D.3d 494, 496 (2d Dep’t 2006)).

Applying these principles, the government is not liable for the collision between

Agent Bartnik’s Sonata and Sterling’s Fly-7 e-bike. Sterling argues that Agent Bartnik

negligently drove through a red light, in violation of VTL §§ 1111(d)(1), (d)(3), and

negligently turned left without yielding to approaching vehicles with the right of way, in

violation of VTL § 1141. (Tr. 31:2–34:17; ECF No. 30 ¶¶ 56–63).2 As the Court found

2 Section 1111(d) of the VTL requires traffic “facing a steady circular red signal ... [to] stop ... and ... remain

standing until an indication to proceed is shown.” VTL § 1111(d). Section 1141 of the VTL requires a driver

above, however, Agent Bartnik credibly testified that he turned left when his traffic light

turned green, and that Sterling drove his e-bike through a red light and t-boned Agent

Bartnik.

Bartnik drove at a reasonable speed of 14–15 miles per hour and checked

eastbound traffic before turning. (Tr. 138:23–139:5, 143:7–10; Tr. 77:7–16). Bartnik was

unable to yield to Sterling because he only noticed Sterling when they were both in the

intersection, and Sterling was in the intersection for less than a second. (Tr. 151:15–

152:4; 156:18–157:4; 163:24–164:3). Sterling, on the other hand, noticed Bartnik when

Sterling still had a green light, Bartnik had a red light, Sterling was approximately 50 to

100 feet away from the intersection. (Tr. 32:12–24). Sterling therefore had time to adjust

and avoid a collision with Bartnik. The Court therefore cannot find that Bartnik breached

his duty to Sterling when he made a left turn from Atlantic Avenue into Albany Avenue

and so cannot find the government liable in this action.

CONCLUSION

After considering the trial testimony and all the evidence, the Court finds that

Sterling failed to carry his burden to show by a preponderance of the evidence that Agent

Bartnik negligently caused the October 2, 2020, collision at the Atlantic Avenue-Albany

Avenue Intersection. The government therefore is not liable. The Clerk of Court is

respectfully directed to enter judgment for the United States and close this case.

turning left at an intersection to “yield the right of way to any vehicle approaching from the opposite direction

which is within the intersection or so close as to constitute an immediate hazard.” VTL § 1141.

SO ORDERED.

Hon. R amón E. Reye s, Jr. D igitally sign ed by Hon. Ramón E. Reyes, Jr.

Date: 2025.09.29 11:05:59 -04'00'

RAMÓN E. REYES, JR.

United States District Judge

Dated: September 29, 2025

Brooklyn, New York

This is a copy of a public record, reproduced as it was published. It is not legal advice, and it may not be the version a court would rely on. Check the official source before you cite it.

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