IIHS: Automatic emergency braking reduces the number of semi-trailer crashes by nearly half.

For now, the benefits of forward collision warning and automatic emergency braking systems are visible to the naked eye,media reported. These techniques provide two protections for drivers who may not respond in a timely manner or focus all their attention on the road. Most studies, however, deal with their benefits for passenger cars. In fact, they also apply to semi-trailers.

IIHS: Automatic emergency braking reduces the number of semi-trailer crashes by nearly half.


The National Highway Safety Insurance Association (IIHS) on Thursday released its latest AEB and Forward Collision Warning System study, which focuses on semi-trailers weighing more than 30,000 pounds. Although semi-trucks are less likely to collide than cars, collisions can be more fatal because of their weight. In this type of crash, tailgating is very common.

According to the study, if semi-truck drivers were driving cars with both active safety features, 40 percent of tailgating accidents could be avoided. Semi-trailers equipped with forward collision alerts are 44 percent less likely to have a tailgating accident, while trucks equipped with AEB are 40 percent less likely to have a tailgating accident. With these technologies, truck accident rates have been reduced by 22% and 12%, respectively.

ITHS is understood to be investigating 2,000 incidents between 2017 and 2019. Overall, half-car crashes in the U.S. have risen 33 percent since bottoming out in 2009. According to the latest statistics, more than 4,000 people died in semi-trailer-related crashes in 2018, 119 of them tailgating accidents.

But even now there is no requirement that cars or semi-trucks must use AEB. However, under a voluntary agreement covering all major carmakers, most passenger cars will be equipped with the technology by 2022. Semi-trailers are another matter, although IIHS points out that the technology has been used as a standard truck in the EU for seven years. In response, IIHS believes the US should do the same.