Tag Archives: NHTSA

In Memory of Clarence and Lisa Nelson (October 21, 2025)

Safety Advocacy, Truck Safety, Underride Crash Map, , , , ,

UPDATE March 13, 2026: Hundreds of people die every year when pedestrians, cyclists, motorcyclists, and occupants of passenger vehicles go under trucks. Please consider joining a STOP Underrides National Town Hall via Zoom April 15 | 8 – 9 pm ET |RSVP HERE. 

Your voice at this unique advocacy gathering will let your U.S. Senators and Representative know that you want them to pass the STOP Underrides Act of 2026.

A former assistant basketball coach at Pomona High School Clarence Nelson and his wife Lisa were among the three victims killed in a deadly Ontario crash at 10 Freeway on Tuesday, October 21.  . . drove the truck into slow-moving traffic on the I-10 Freeway in San Bernardino County. Dashcam footage released by ABC7 shows Singh slamming into an SUV, without any attempt to apply brakes. Ontario Crash: Pomona High School Assistant Basketball Coach Clarence Nelson & His Wife Killed In Fatal Accident

Because the bottom of a truck is higher than the bumper of passenger vehicles, when there is a collision the smaller vehicle easily slides under the truck and the first point of impact is the windshield. Seatbelts, airbags, and car crumple zones do not function as intended in underride crashes —front, side, and rear — leaving passenger vehicle occupants vulnerable to life-threatening injuries.

Clarence & Lisa Nelson, Precious Ones Gone Too Soon

Major truck manufacturers have Front Underride Protection designs which can work on American trucks.

AMERICA’S DANGEROUS TRUCKS (PBS/Frontline Underride Documentary)

See Underride Crash Memorials posted here and at #STOPunderrides Tweets. To add photos or more information on this story or to add other underride crashes to be remembered, send an email to underridemap@gmail.com. Please use this Interactive Underride Crash Map Crash Location Input Form to provide us with accurate information . (Note: the map is currently not online; but we would keep the information for future updating and to aid in underride advocacy efforts.)

Note: In order to raise awareness and preserve the memories of underride victims — precious ones gone too soon — I have been writing memorial posts on what could potentially be underride crashes. I am not a crash reconstructionist, and I do not have all the facts on these crashes; but underride should be investigated as a potential factor in truck crash injuries and deaths.

Did DOT Violate the Information Quality Act When it Published Side Underride Guard Research?

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The Department of Transportation published a report in May 2020, A Literature Review of Lateral Protection Devices on Trucks Intended for Reducing Pedestrian and Cyclist Fatalities. The published report purported to fulfill a $200,000 contract (number SA9PA1) awarded by the Federal Motor Carrier Administration (FMCSA) to the John A. Volpe National Transportation Systems Center. In 2019, Volpe Center researchers turned in a draft of that report, entitled, “Truck Side Guards and Skirts to Reduce Vulnerable Road User Fatalities: Final Report on Net Benefits and Recommendations” (DOT-VNTSC-FMCSA-19-01). The published literature review left out many of the original objectives outlined in the contract between FMCSA and the Volpe Center to study the effectiveness of truck side guards to reduce Vulnerable Road User deaths.

Senior Agency Officials Suppressed Side Guard Research — Impacting Regulatory Analysis

ALMFTS investigated by requesting documents pursuant to the Freedom of Information Act. Internal agency emails reveal that the Department — not the study’s authors — rewrote the Volpe Center Report, in violation of a federal guidance on conducting peer review. The emails document that a NHTSA official made revisions to the original report rather than making recommendations to the study’s authors — as would be done in a genuine peer review.

Here is a subset of those emails — a list of some of the more relevant and revealing ones, which document that revisionism rather than review of a research study took place:

USDOT Emails Via FOIA – Documentation of Violation of OMB Peer Review Guidance

This is a violation of an Office of Management & Budget guidance on peer review — at the peril of Vulnerable Road Users who are at risk of known, unreasonable, and preventable truck underride injuries and death, as well as occupants of passenger vehicles. 

Relevant documentation: Timeline of Events Concerning the Volpe Center Side Guard Research Report

When one errs, the right thing to do is to correct the error. The right thing to do here is to correct the information the Department erroneously published. What will the Secretary of Transportation do, at this juncture in history, to protect these souls entrusted to his care?


If only the federal traffic safety agency had fought as hard to get side underride protection on the roads as they did to keep them off the roads, those roads would be a whole lot safer. Although it is only one piece of a larger puzzle, the Volpe National Transportation Systems Center report on truck side guards — before Department officials suppressed its findings — illustrates the cost effectiveness of a technically-proven road safety countermeasure.

In Memory of Suleiman Hamideh (September 15, 2025)

Safety Advocacy, Truck Safety, Underride Crash Map, , , , , ,

 

UPDATE March 13, 2026: Hundreds of people die every year when pedestrians, cyclists, motorcyclists, and occupants of passenger vehicles go under trucks. Please consider joining a STOP Underrides National Town Hall via Zoom April 15 | 8 – 9 pm ET |RSVP HERE. 

Your voice at this unique advocacy gathering will let your U.S. Senators and Representative know that you want them to pass the STOP Underrides Act of 2026.

A young boy was hit and killed by a semi-truck Monday night while riding his bike off Cottondale Drive. 

The Baton Rouge Police Department said that the 7-year-old was hit around 7:40 p.m. on Lindale Avenue near the intersection of Cottondale. The coroner’s office later identified the boy as Suleiman Hamideh. . .

. . . he struck Hamideh with the rear driver’s side tire on his trailer. . . 7-year-old boy fatally struck by 18-wheeler while riding bike in Baton Rouge

Suleiman Hamideh, Precious One Gone Too Soon

Because the bottom of a truck is higher than the bumper of passenger vehicles, when there is a collision the smaller vehicle easily slides under the truck and the first point of impact is the windshield. Seatbelts, airbags, and car crumple zones do not function as intended in underride crashes —front, side, and rear — leaving passenger vehicle occupants vulnerable to life-threatening injuries. This is also true for Vulnerable Road Users, such as pedestrians, bicyclists, motorcyclists and wheelchair users, who can suffer catastrophic injuries when they collide with the unguarded side of a large truck.

Note: In order to raise awareness and preserve the memories of underride victims — precious ones gone too soon — I have been writing memorial posts on what could potentially be underride crashes. I am not a crash reconstructionist, and I do not have all the facts on these crashes; but underride should be investigated as a potential factor in truck crash injuries and deaths. See Underride Crash Memorials posted here and at #STOPunderrides Tweets. To add photos or more information on this story or to add other underride crashes to be remembered, send an email to underridemap@gmail.com.

Find out more about Vulnerable Road Users and preventable underride tragedies:

In Memory of Colene Ruhl (September 16, 2025)

Safety Advocacy, Truck Safety, Underride Crash Map, , , , , , , ,

UPDATE March 13, 2026: Hundreds of people die every year when pedestrians, cyclists, motorcyclists, and occupants of passenger vehicles go under trucks. Please consider joining a STOP Underrides National Town Hall via Zoom April 15 | 8 – 9 pm ET |RSVP HERE. 

Your voice at this unique advocacy gathering will let your U.S. Senators and Representative know that you want them to pass the STOP Underrides Act of 2026.

A woman in a motorized wheelchair was hit and killed Tuesday afternoon in Winter Springs, a spokesperson for the city told WESH 2. . .

Officials said they found the woman lying in the roadway, “deceased from what appeared to be injuries suffered from being struck by a semi-tractor-trailer.”

The woman was on the sidewalk when a semi heading east on SR-434 was attempting to make a right turn on Belle Avenue.

As the semi began to turn right onto Belle, the woman started to cross Belle and was hit by the trailer of the turning semi, thrown from the wheelchair and killed, officials said. Woman thrown from wheelchair, killed after being hit by semi making turn in Winter Springs

Colene Ruhl, Precious One Gone Too Soon

Because the bottom of a truck is higher than the bumper of passenger vehicles, when there is a collision the smaller vehicle easily slides under the truck and the first point of impact is the windshield. Seatbelts, airbags, and car crumple zones do not function as intended in underride crashes —front, side, and rear — leaving passenger vehicle occupants vulnerable to life-threatening injuries. This is also true for Vulnerable Road Users, such as pedestrians, bicyclists, motorcyclists and wheelchair users, who can suffer catastrophic injuries when they collide with the unguarded side of a large truck.

Note: In order to raise awareness and preserve the memories of underride victims — precious ones gone too soon — I have been writing memorial posts on what could potentially be underride crashes. I am not a crash reconstructionist, and I do not have all the facts on these crashes; but underride should be investigated as a potential factor in truck crash injuries and deaths. See Underride Crash Memorials posted here and at #STOPunderrides Tweets. To add photos or more information on this story or to add other underride crashes to be remembered, send an email to underridemap@gmail.com.

Find out more about Vulnerable Road Users and preventable underride tragedies:

Critique of NHTSA-Contracted Elemance Rear Impact Guard Research

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Secretary Duffy,

The Department of Transportation (DOT) engaged Elemance LLC in 2022 to evaluate three current designs of rear impact guards. Unfortunately, Elemance conducted Finite Element analysis of two obsolete rear underride guards that were not current designs at the time of the contract. In fact, both of those designs had been proven a decade earlier to be crash-deficient. The two manufacturers — Great Dane and Wabash — have developed designs with safer, stronger rear-guard designs. Elemance compounded that error by employing an erroneous definition of Passenger Compartment Intrusion. Elemance’s research findings, Heavy-Truck Rear-Impact-Guard Finite Element Simulation and Analysis, are flawed and backwards-looking rather than helpful to the Department and Congress in evaluating current and future rear underride guard performance and regulatory standards.

Please find attached a detailed critique by engineers who are well-acquainted with the underride problem and solutions. This is what the engineers concluded about the NHTSA-contracted research:

In view of the defects in the Elemance report, a follow up study should be commissioned to evaluate examples of current state of the art rear impact guards that have been in service since 2016 and 2017 respectively. The study should utilize the correct definition of PCI and more accurately assess injury risk.

The Department should act promptly to address the flaws in this federal research in order to fulfill its mission to reduce roadway injuries and deaths.

Jerry and Marianne Karth

Note: This critique was submitted as a Public Comment on September 3, 2025, to the U.S. Department of Transportation in response to their Request for Comments on priorities for the 2026 Surface Transportation Reauthorization.

This video created by the Insurance Institute for Highway Safety twelve years ago explains their Rear Impact Guard crash testing research and how the federal standard is failing to protect road users:

This video is a compilation of IIHS Rear Impact Guard crash tests with old and new guard designs for many of the major trailer manufacturers:

This video demonstrates the night & day difference between old and new designs by one manufacturer:

First-time Ever: NHTSA Nominee Questioned On Underride By Senator

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For the first time in DOT’s history, a nominee for NHTSA Administrator was questioned in a hearing about the agency’s lack of progress in preventing underride deaths. Senator Ben Ray Lujan (D-NM) questioned Jonathan Morrison about NHTSA’s failure to consider the benefit of preventing hundreds of pedestrian, bicyclist, and motorcyclist deaths in a pending rulemaking for side underride guards. 

According to a 2014 study by the National Transportation Safety Board, about 120 pedestrians, bicyclists and motorcyclists are killed every year under the sides of tractor trailers. A side underride guard that blocks those vulnerable road users from falling under the tandem wheels of trailers would prevent their deaths.

But a pending NHTSA rulemaking on side underride guards neglected to count a single vulnerable road user’s death in the all-important cost-benefit analysis.

Senator Lujan: Another issue that I care about deeply is ensuring that trucks have side underride guards to prevent cars, pedestrians, and cyclists from being crushed underneath. . . . According to NHTSA, the cost of installing side underride guards exceeds the benefits. Unfortunately, to reach this estimate, NHTSA makes assumptions in their cost benefit analysis that excludes whole categories of preventable deaths of vulnerable road users, such as pedestrians, cyclists, and motorcyclists.

Senator Lujan: I don’t understand that. If it’s going to be studied, it should be studied. And then an answer should result based on whatever the research is.

Senator Lujan: Yes, or no? Will you commit to counting pedestrians and bicyclists as preventable deaths for road users in the cost benefit analysis for any future rulemaking on side underride guards?

Jonathan Morrison: I will work with the economists within NHTSA to make sure that everything appropriate is being considered. I’m not familiar with that particular study.

Well, that would be refreshing. . . to have everything appropriate considered by the federal regulator whose mission it is to reduce roadway injuries and deaths. And that includes underride.

If pedestrian, bicyclist, and motorcyclist deaths had been included in the cost-benefit analysis as they should have been, the annual number of deaths side underride guards could prevent would have been estimated to be at least 137. Under those circumstances, the benefits of regulation would have outweighed or been equal to the costs, and the agency would have mandated side underride guards.

Here’s the clip from the hearing (1:02:02 in the video of the Senate Commerce hearing on July 16, 2025):

Senator Lujan questions NHTSA Administrator nominee Jonathan Morrison on underride

Risky Rigs: Thousands of people have died after their car slid under a tractor-trailer

Safety Advocacy, Truck Safety, , ,

How many underride investigative reports will it take to finally bring about government regulations and industry cooperation to end preventable death by underride? Tampa Bay 10 recently aired the results of their year-long underride investigation.

PART 1 – Risky Rigs: Thousands of people have died after their car slid under a tractor-trailer

PART 2 – Risky Rigs: Thousands of people have died after their car slid under a tractor-trailer

NHTSA’s Neglect of Underride Protection Deserves Congressional Oversight

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CALL TO ACTION – November 2024

Tell Congress that you want them to exercise their oversight of the federal roadway safety agency, the National Highway Traffic Safety Administration (NHTSA). Call the U.S. Congress Switchboard, (202) 224-3121, and ask for each of the following members of the Senate Commerce Committee. Tell them that you want them to hold an Underride Oversight Hearing in the 2024 lame duck session:

  • Senator Maria Cantwell
  • Senator Gary Peters
  • Senator Ted Cruz
  • Senator Todd Young

This video explains why an oversight hearing is vital: NHTSA’s Neglect of Underride Protection Deserves Congressional Oversight.

Please make these phone calls now. Thank you.

$462M Jury Verdict Over Rear Impact Guard Design

Safety Advocacy, Truck Safety, , , , , ,

For over 50 years, NHTSA has failed to require truck trailers to be equipped with underride guards that protect road users from death and injury. The industry has lobbied to keep it that way and tens of thousands of innocent people have lost their lives as a result. This week, a St. Louis jury made a trailer manufacturer pay a just price.

Why would the jury do so? Could it have been because Wabash continued to sell an inadequate rear impact guard as standard equipment — even though they have a safer option available — and because of the industry’s opposition and the government’s abandonment of public safety?

Justice has been served.

MEDIA COVERAGE

What Don’t They Want to See? DOT Declines to Send Observer to Underride Crash Test… AGAIN!

Safety Advocacy, Truck Safety, , , , , , ,

“TEAM Underride,” a loosely-organized coalition of engineers, researchers, safety advocates, and families of underride victims have planned multiple underride crash tests, underride crash test events, and a vigil for underride victims. Two of those events were in D.C. — an D.C. Underride Crash Test Event on March 26, 2019 in the Audi Field parking lot one mile from DOT and an Underride Victim Vigil in September 2023 on the sidewalk in front of the DOT building on New Jersey Avenue in D.C.

Despite multiple communications inviting the Department of Transportation, and especially NHTSA who is responsible for underride rulemaking, to these events, less than a handful of department representatives have shown up. What’s with that? What don’t they want to see? What they should want to see is honest to goodness research being undertaken to solve the decades-old problem of Death By Underride — proof-positive that the ball is in their court to issue regulations which could end countless preventable tragedies.

I emailed multiple people at DOT on January 11, 2019 — inviting them to our March crash test. Then, on February 6, 2019, after Lois Durso and I had checked out the Audi Field parking lot and walked over to DOT from there, we hand delivered a stack of event flyers and asked that they be distributed. I was told, “We will make sure that the event flyers are distributed.” Only one person — from FMCSA, which is not primarily responsible for underride rulemaking — bothered to come. Two months isn’t enough notice to put it in their schedule (no travel approval necessary)?

On July 11, 2023, I sent an online scheduling request to the Office of the Secretary — hoping that Secretary Buttigieg could attend the August 3, 2023, Raleigh Underride Crash Test Event. I followed up with an email to the Office of the Secretary. On July 19, I received this reply:

Unfortunately, DOT will not be able to send a representative to the event in Raleigh. Our team is sorry this didn’t work out, but we’re grateful for your continued advocacy and safety work and look forward to continued collaboration.

This is what they would have seen — had they bothered to come: Underride Crash Tests – Unguarded Trailer vs Guarded Trailer

Raleigh Underride Crash Test Event, August 3, 2023

I received a reply on August 23, 2024, to my August 5 request for the Secretary — or someone from the Department — to come to the Raleigh Underride Crash Test Event on September 13, 2024. I understand that Secretary Buttigieg could not fit it into his schedule, but the response was rather disturbing — though not surprising:

Thank you very much for the follow-up. Unfortunately, DOT won’t be able to send a representative for this event. We’re very sorry it won’t work out this time, and we are sending our best for an impactful event next month.

It won’t work out this time?!

Here’s the event flyer for the crash testing event coming soon in Raleigh at the North Carolina State Highway Patrol training facility: Raleigh Underride Crash Test Event – SAVE THE DATE: September 13, 2024

Be there, or be square!