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.
According to El Paso Times, 37-year-old Michelle Lira was driving a 2016 Ford Fusion eastbound on Artcraft when she attempted to make a u-turn in front of an oncoming westbound semi truck driven by 30-year-old Michael Thomas Denney.
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.
Michelle & Blanca Lira, Precious Ones Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
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.
The man was driving west in a pickup truck on Missouri Highway 50 about 8 p.m. Saturday. Near Birch Creek, his car crossed the centerline and collided with an oncoming tractor-trailer, troopers said.
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.
William McMillian, Precious One Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
Drowsy driving is one of many driving hazards which renders drivers less capable of responding appropriately to prevent a crash. Distracted, drugged, and drunk driving likewise cause preventable tragedies.
October 31, 2016, Update on ELDs:ELD mandate survives court challenge “A federal mandate requiring nearly all U.S. truck operators to use electronic logging devices to track duty status has been upheld in court, meaning the December 18, 2017, compliance date remains effective.” I still am hoping to get a Tired Trucker Roundtable organized because ELDs are only a part of the solution.
UPDATE on Electronic Logging Devices: In lawsuit Court date set for ELD lawsuitThe federal court overseeing the lawsuit challenging the U.S. DOT’s electronic logging device mandate has scheduled oral arguments for the case to be heard in court on Sept. 13, where the owner-operator plaintiffs in the case hope to convince the court to strike down the U.S. DOT’s ELD mandate. The DOT, meanwhile, hopes to convince the court to uphold its mandate.
After the truck crash which killed AnnaLeah and Mary, we never saw the truck driver’s paper log books and he was not able to tell us why he hit us. We suspect that drowsy driving may well have played a part. But it is a very difficult thing to prove.
I can’t go back and re-do that day and make sure that truck driver is fully alert throughout his entire work day on the road–especially that stretch of I-20 in Georgia near Exit 130. But I can advocate for the widespread public health problem of driver fatigue to be recognized and tackled.
Congress, let DOT do their job to stop tired truckers. Make saving lives the priority and not saving corporate dollars. See what DOT Secretary Foxx says about trucker Hours of Service: Why We Care About Truck Driver Fatigue.
Driver fatigue can affect any driver–you included, or the driver of a vehicle in which you are a passenger.
“…Driving while fatigued is comparable to driving drunk, only there is not the same social stigma attached. Like alcohol, fatigue affects our ability to drive by slowing reaction time, decreasing awareness and impairing judgment. Driving while sleep impaired is a significant issue, and is no longer tolerated. Legislation {in Canada} is beginning to change by handling collisions cause by a fatigued driver as seriously as alcohol-impaired crashes.” https://canadasafetycouncil.org/safety-canada-online/article/driver-fatigue-falling-asleep-wheel
This is our crash, which may have been caused by a drowsy truck driver–killing AnnaLeah (17) and Mary (13).
Fatigue is an ongoing problem among truck drivers. There are many factors, some of them beyond a driver’s control, which contribute to fatigue. Unfortunately, their fatigue too often contributes to a greater likelihood of a crash.
Currently, there are inadequate means to 1) prevent truck drivers from driving fatigued and 2) prove that it was a causal factor when accidents occur.
Electronic Logging Devices have been mandated by legislation and the DOT rule which requires them has passed an important milestone. Here is a summary of its progress:
“So, to break down the EOBR / ELD mandate process so far:
The road to the ELD mandate began when Congress passed MAP-21 in June 2012.
The president signed MAP-21 shortly thereafter, requiring the FMCSA to write a rule requiring use of electronic logging devices, or EOBRs, for all drivers that keep a Record Of Duty Status—about 3.1 million trucks and 3.4 million drivers today.
The FMCSA developed a Supplemental Notice of Proposed Rulemaking (SNPRM) that was sent to the Office of the Secretary, who approved it and sent it back to the FMCSA in July 2013.
From there, the rule moved over to OMB, where it cleared today, March 12, 2014.
The FMCSA will keep the rule for the next two weeks, eventually publishing the SNPRM for public comment.
A comment period will then take place, published as 60 days, giving anyone a chance to add their feedback.
The FMCSA will take those public comments and revise the rule, a process that can take between six and nine months.
According to these time frames, we can estimate a final rule to be published in the first calendar quarter of 2015.
Based on MAP-21 requirements, fleets will have two years to comply with these rules—meaning you will be required to implement an EOBR for an Electronic Logging Device by January 2017 at the latest.”
We are thankful for the progress which DOT has made thus far with the Electronic Logging Device rule. However, we don’t want the process to drag out any longer than necessary. Lives are at stake!
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.
One person was killed after a multi-vehicle crash occurred in Warren County Friday morning. . .
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.
Gary Bevis, Precious One Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
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.
Willie Spence, a former finalist on ABC’s “American Idol,” died Tuesday in a car crash, according to the Tennessee Highway Patrol. He was 23.
A preliminary report from the Tennessee Highway Patrol found that Spence’s Jeep Cherokee was driving east along Interstate 24 in Marion County at about 4 p.m. Tuesday when it left the roadway and hit the back of a tractor-trailer that had pulled off onto the shoulder. Willie Spence, “American Idol” finalist, dies at age 23
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.
Willie Spence, Precious One Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
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 Kenworth tow truck was headed northbound on I-93 in Boston.
At the same time, a Lexus SUV was traveling in front of the truck.
South of Exit 20, the Lexus slowed for unknown reasons and was rear-ended by the tow truck, according to Massachusetts State Police. . .
The two rear seat occupants of the Lexus, both former Quinnipiac students, were trapped inside the vehicle and were determined to be deceased on scene.
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.
Delanie Fekert & Urushi Madani, Precious Ones Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
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.
The Georgia State Patrol has released the name of the driver killed in a two-vehicle crash Friday evening in Lula. 48-year-old Cindy Elaine Flanagan died when the Honda Accord she was driving crossed the centerline and struck an oncoming tractor-trailer head-on, troopers say.Woman killed in head-on collision with tractor-trailer in Lula
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.
Cindy Flanagan, Precious One Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
At various times, members of the trucking industry have voiced doubt about the ability of side guards to function effectively in “real world” crash scenarios.
“We have yet to see evidence that side underride guards would be an effective safety countermeasure,” American Trucking Associations Vice President of Public Affairs and Press Secretary Sean McNally said. “Until these devices can be shown to be reliable outside the test track, we believe Congress and regulators should focus on reducing crashes by addressing aggressive and distracted driving and investing in existing, proven safety technologies, including emerging connected vehicle technology.
ATA also notes that trucking companies have opposed the legislation because it “promotes a solution that is neither data-driven nor proven to be effective in real-world highway settings,” and entails potentially “dangerous” and “unintended” consequences. Congress takes third swing at side underride bill
For this SAE research, Protecting Passenger Vehicles from Side Underride with Heavy Trucks, the authors carried out computer simulation in order to assess how side guards would operate in various conditions. According to Garrett Mattos, the principal author,
We simulated angles (0 degrees, 30, 60, and 90 degrees).
We simulated sliding (as if on ice).
We simulated both stationary and moving truck. Slightly worse outcomes for moving truck vs stationary truck.
Garrett Mattos presented an overview of the research paper at the Side Guard Task Force Meeting on February 26, 2021. You can see his presentation at 1:46:21 on this YouTube Video:
ABSTRACT
Impacts between passenger vehicles and heavy vehicles are uniquely severe due to the aggressivity of the heavy vehicles; a function of the difference in their geometry and mass. Side crashes with heavy vehicles are a particularly severe crash type due to the mismatch in bumper/structure height that often results in underride and extensive intrusion of the passenger compartment. Underride occurs when a portion of one vehicle, usually the smaller vehicle, moves under another, rendering many of the passenger vehicle safety systems ineffective.
Heavy vehicles in the US, including single-unit trucks, truck tractors, semi-trailers, and full trailers, are currently not required to have side underride protection devices. The NTSB, among other groups, has recommended that side underride performance standards be developed and that heavy vehicles be equipped with side underride protection systems that meet those standards.
The work presented used virtual testing to evaluate the relative performance of example side underride devices compared with a baseline. Crash test results were utilized for validation purposes. A tractor-trailer, with and without side impact underride protection, was impacted by a passenger car and SUV under a range of impact conditions. Passenger vehicle intrusion metrics were calculated to provide an indication of relative risk for each impact condition. The results can support the development of side underride protection recommended practices.
DISCUSSION
The results of the analysis indicate that available side underride guards are effective at reducing passenger compartment intrusion (PCI) substantially in what are often fatal side underride crashes. Nearly all passenger compartment intrusion above the beltline was mitigated other than in the purely lateral impact conditions. When intrusion did extend above the beltline, e.g. in the purely lateral sliding condition, the amount of PCI was similar to the intrusion generated in a 56 km/h side impact of a 5-star rated vehicle. Further, the average amount of PCI in the above tests was similar to the amount resulting from small overlap tests of the same vehicle. These results demonstrate that an underride guard can provide a sufficient reaction surface to allow for the vehicle’s passive and active safety systems to protect the occupant. The underride guard also causes the location of PCI to move from near the occupant’s head and torso to the lower extremities which reduces the likelihood of serious or fatal injury.
In general, the results suggest that impacts with a moving truck/trailer combination are more severe than when the truck is stationary. The added velocity of the truck/trailer combination results in greater intrusion of the bullet vehicle firewall as well as slightly higher peak accelerations. Impact severity was also increased when the size of the gap between the end of the underride guard and the rear tires was increased. The increased gap size allowed the bullet vehicle to interact more with the rear tires. In the impacts with a large gap the trailer tires very nearly engaged the driver side door. These results can help to define a comprehensive test plan that can be used to assess the performance of an underride guard.
The acceleration pulses for all impacts were within the range of frontal and side impact crash test pulses generated in similar tests of vehicles that exhibit 5-star safety ratings. This indicates that these impacts were all survivable. The most severe impact scenario was a 56 km/h sideways slide into the trailer with an underride guard.
As shown, there is an 80% or greater reduction in PCI for impacts with an underride guard compared to the baseline condition. Additionally, the location of PCI in the underride guard impacts was generally found to be at the outer firewall area rather than at or above the belt line as in the baseline case. Reducing the PCI and moving the location of PCI away from the occupant’s head and torso both significantly reduce the likelihood of serious injury. No adverse effects were observed as a result of the underride guard.
These results indicate that tests used to evaluate the performance of underride guards should incorporate a moving truck/trailer combination as this was found to increase the severity of the impact. Additionally, the location and size of gaps between an underride guard and the trailer tires and/or landing gear should also be considered as this was found to affect the results. The results demonstrate, along with other work in the literature, that Finite Element analysis can enhance physical tests to expand the number of impact scenarios in a cost-effective and time-efficient manner. While additional impact conditions and test cases can be analyzed, the results are expected to further demonstrate the importance of trailer side underride guards in reducing passenger compartment intrusion under these crash conditions.
Side underride guards integrated into the trailer structure may further enhance the safety benefits associated with preventing trailer underride and limit added weight. Exploration of these design alternatives should be explored in the future in conjunction with additional crash vehicles and configurations.
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 Cobb County woman died early Friday morning after she drove the wrong way on I-75 and crashed head-on into a tractor-trailer, officials said.
Chassity Hogan, 30, of Mableton, was identified as the driver of a white 2014 Hyundai Elantra that was traveling south in the northbound lanes of I-75, Cobb police said in a news release. Hogan was pronounced dead at the scene, but the truck driver was not hurt.Cobb woman killed in wrong-way crash with tractor-trailer on interstate
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.
Chassity Hogan, Precious One Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
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.
According to an announcement from the Dalhart Volunteer Fire Department, Firefighter Brendan Torres, 19, and Fire Chief Curtis Brown, 51, were involved in a crash with a semi late last night while returning from a call earlier that night.
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.
Brendan Torres & Curtis Brown, Precious Ones Gone Too Soon
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.
We are asking that people send us crash reports for collisions with trucks which they suspect involved underride. Send them to marianne@annaleahmary.com. We will submit these as complaints to USDOT. Read more here: Launching a Campaign To Flood NHTSA With Underride Complaint Reports
