Underride accidents, a type of accident involving passenger vehicles and tractor-trailer rigs, are responsible for only about 1% of all highway fatalities annually. However, like their cousin “override” accidents, underride accidents are particularly lethal for the occupants of passenger vehicles involved. In addition, safety groups tend to focus on underride accidents because of the belief that such accidents are preventable, given the proper safety equipment. Underride accidents occur when a passenger strikes a tractor-trailer rig from behind or from the side. Because the trailer in a tractor-trailer 18-wheeler rides much higher than most passenger vehicles, such collisions often result in the passenger vehicle driving under the trailer of the 18-wheeler. This frequently wedges the passenger vehicle under the trailer and essentially cuts the top off the passenger vehicle. Occupants of the passenger vehicles frequently suffer catastrophic, often fatal, upper body injuries, including decapitation. While the federal government has taken some regulatory steps to address the issues, there remain safety groups who are not satisfied with the progress.
Preventing Underride Crashes is Simple, But Complicated
On one level, preventing underride crashes is as simple as installing barriers that make it difficult or impossible for passenger vehicles to drive under the trailer of an 18-wheel rig. Unfortunately, that is not as simple as it sounds. Underride crashes cause far fewer accidents, injuries, and fatalities than do other primary causes such as speeding or driving under the influence of alcohol or drugs. Underride accidents caused an average of 219 traffic deaths annually from 2008 through 2017, accounting for less than 1% of all traffic deaths during that time frame. On the other hand, that number represents more than 5% of all deaths involving large commercial trucks over the same time period. The fact is, underride accidents tend to be fatal, certainly for the people in the passenger vehicles involved.