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Rear impact guards are an important safety feature on any trailer. In this post we will share their history and current regulations to keep in mind.
Historically known by a few names such as bumpers, Interstate Commerce Commission or “ICC” bumpers, Rear Underride Guards, and Rear Impact Guards; this structure on the rear of a trailer has the primary purpose of preventing or reducing serious injury to automobile passengers during rear impact and/or an underride collision with a trailer.
These were originally implemented after the tragic death of Hollywood star Jayne Mansfield in 1967, who tragically died enroute to a television appearance, when her car crashed under the rear of a truck trailer.
Shortly after the 'Mansfield accident', the U.S. National Highway Traffic Safety Administration (NHTSA) proposed new standards calling for the addition of underride protection on the rear of some truck trailers to help prevent deaths due to the underride of passenger cars.
As of July 2022, NHTSA announced new rules for upgrading the Federal Vehicle Safety Standards (FMVSS) to include rear impact guards by 2024. Luckily, 94% of all trailers built in North America today exceed the new NHTSA requirements.
Current regulations specify that the Rear Underride Guards on your trailers must meet the standards in effect at the time of the trailer’s original manufacturing. This means that older trailers are “grandfathered in” and do not require replacement. However, the regulations do require that rear impact guards be kept in good condition and properly repaired or replaced in keeping with the original standards. If you need to repair or replace, consider the following:
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Industry veteran Trevor Ternes has spent the 27 years of his career exclusively in trailer rental and leasing, with a specialty in Operations and Operations Management. Trevor enjoys learning and sharing industry knowledge with customers and Premier team members alike and is always glad to help answer questions.
Trevor Ternes
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