Tag Archives: underride

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

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 Colene Ruhl (September 16, 2025)

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 —frontside, 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:

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

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

Good News: Stoughton extends IIHS-award-winning underride protection to container shipping

Good news on underride protection: IIHS has given the TOUGHGUARD Award for rear impact underride protection on intermodal chassis trailers to Stoughton Trailers — the first trailer manufacturer to earn it and one of the largest chassis manufacturers in North America. Should this lead to speculations about what engineering ingenuity could actually produce — despite industry grumblings about the operational issues regarding underride protection, particularly at the sides of intermodal chassis trailers?

Underride guards that meet the Toughguard criteria are substantially more likely to withstand an impact, reducing the severity of the crash. Until now, only dry van, refrigerated and flatbed trailers have qualified. But with the growing importance of shipping containers in global trade, more and more freight is being transported using intermodal chassis.

Chassis-type trailers present a unique challenge when it comes to underride protection. The frame of a dry van, refrigerated or flatbed trailer extends across its entire wheelbase, supporting the underride guard for its full width. In contrast, an intermodal chassis is a ladderlike structure that lies between the trailer’s wheels to support the removable container.

For that reason, the underride guard required a completely new design. Instead of a vertical support attached to the trailer deck, the chassis guard features long, diagonal supports running from the guard’s outboard ends to the chassis rails. Stoughton Intermodal Chassis Earns Underride Guard Award

I’m grateful for Stoughton Trailers’ continued commitment to safety. Unfortunately, not every trailer manufacturer is equally safety-minded. And NHTSA has not shown an inclination to send a strong message to industry; in fact, they declined to include Stoughton’s dry van RIG solution in their regulatory analysis for a 2022 update of the rear guard rule. Decades of government and industry inaction means that there are still far too many (almost ALL of them) trucks on the road which do not have adequate underride protection.

Engineers know how to creatively solve problems. Give them a green light to SAVE LIVES!

Kaizen and Underride Protection: A New Industry Approach

What is the industry’s approach to underride protection? Is it anything like the Japanese attitude of Kaizen? This blogpost caught my attention:

I am reminded of a Japanese word: Kaizen. I read a book once that discussed the difference between the American mindset and the Japanese mindset – explaining that Kaizen is a Japanese word meaning “improvement or change for the better”. Kaizen is defined as a continuous effort by each and every employee… to ensure that there’s continual improvement. The book suggested the American mindset is to build something, work hard at it, step back, admire it, and then move on. The Kaizen mindset is to continue to improve what was built. . . This isn’t about perfectionism. The perfectionist mindset is fixated on what is wrong. The improvement mindset is fixated on what we can make better.

If that was our mindset in the United States, what might we hope to see in underride protection progress? How many more lives might be saved?

What’s New In Underride?

There’s nothing new about underride. Despite the fact that it has taken loved ones from us for decades, bringing an end to preventable underride continues to be an uphill battle. We fight on.

Here are some recent instances of underride getting media coverage:

And, by the way, in case you missed it, here are videos from crash testing of collisions between bicyclists and tractor-trailers — conducted by Aaron Kiefer in Raleigh at the North Carolina State Highway Patrol training facility on September 13, 2024. . .

Unguarded (no side guard) VRU Crash Test:

LPD+ Crash Test with Fully-Guarded Trailer:

Here are some posts I’ve written about Lateral Protection Devices+, i.e. side underride guards:

The proof is in the pudding. I rest my case.

Will Victims & Survivor Advocates Be Given a Voice at DOT?

Senator Lujan and Congressman Cohen recently re-introduced the DOT Victim & Survivor Advocate Act. Much appreciated. But will Congress and the Department of Transportation respond by establishing this vital position within the Office of the Secretary? Is Secretary Duffy truly dedicated to safety?

Read more here: Luján, Cohen Reintroduce Bicameral Legislation to Improve Roadway Safety and Uplift Victim Voices at DOT

Certified Letters Alert Carriers of Underride Dangers, Liability & Solutions

The fact that truck and trailer designs can potentially allow underride when there are collisions with passenger vehicles has a long history of being misunderstood. With that in mind, on October 12, 2024, we sent letters to two lists of “100 top carriers” in North America via Certified Mail. We wanted their Boards and CEOs to be aware of the September 2024 $462 million verdict in a product liability lawsuit against a trailer manufacturer for failing to install a protective rear guard, leading to two fatalities — indicating that juries will not accept more of these preventable deaths.

“We hope the decision the jurors reached sends a clear message to the trucking and trailer industry and will finally force them to build safer trailers,” CVN noted, quoting plaintiff co-counsel Brian Winebright https://www.freightwaves.com/news/wabash-national-hit-with-462m-verdict-in-trailer-equipment-case

 We also encouraged trucking companies to take steps to protect road users and their bottom line by making sure that their fleets are equipped with Rear Impact Guards (RIGs) which qualify for the IIHS TOUGHGUARD Award and side impact guards that prevent side underride fatalities.

The mailing list for the 200 companies can be found here.

The Carrier Letter Template can be found here

A similar Certified Mail Letter went out to carriers in 2020. Relevant information is posted here.

Further details and copies of delivery receipts can be obtained by contacting marianne@annaleahmary.com.

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

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

CALL TO ACTIONNovember 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.