Rear/ Side Underride and Front Override Guards
The federal government should require all trucks and trailers to be equipped with energy-absorbing rear, side, and front underride guards to protect car occupants from underride crashes. These crashes can be catastrophic because the car rides under the trailer, bypassing the crumple zone and airbag deployment sensors; in severe collisions, passenger compartment intrusion occurs. The safety benefits of underride guards are proven and well known. In fact, five of the eight leading trailer manufacturers have developed rear underride guards that qualify for the Insurance Institute for Highway Safety’s (IIHS) ToughGuard rating, which greatly exceeds the proposed federal standard by preventing underride crashes at 100, 50, and 30 percent overlaps at 35 mph.
For several years, the National Transportation Safety Board (NTSB) has issued multiple recommendations for improved rear underride guards, for side underride protection systems, and front underride guards. In addition, NTSB identified the need for improved data collection, including vehicle identification numbers to better evaluate trailer design and the impact on safety.
On July 10, 2014, the National Highway Traffic Safety Administration (NHTSA) announced it would grant the petition brought by Truck Safety Coalition (TSC) and the Karth family to issue a Notice of Proposed Rulemaking (NPRM) for rear underride guards on trailers. Additionally, NHTSA has started an Advanced Notice of Proposed Rulemaking (ANPRM) for rear guards for single unit trucks, and will continue to evaluate side and front guards.
Rear Underride Crashes:
NHTSA reported that large truck rear impacts comprised 22 percent of fatal two-vehicle collisions between large trucks and passenger vehicles during 2015. IIHS crash tests demonstrated that the rear underride guards mandated for trailers by NHTSA in 1998 performed poorly, and that there are available underride guards that far exceed the proposed force requirement by up to 70 percent.
Rear Underride Crash Tests – IIHS ToughGuard Winners: