Why are rear-end collisions so common on interstate highways?

Rear-end collisions are common on interstate highways primarily due to tailgating, which occurs when one vehicle follows another too closely. This practice reduces the reaction time for the driver in the rear vehicle. On high-speed roads like interstates, where vehicles are often traveling at significant speeds, the distance required to stop safely increases. If the leading vehicle suddenly slows down or comes to a stop, the driver tailgating may not have enough time to react, leading to a collision.

While factors like excessive speed can contribute to the severity of the collision or influence driving behavior, tailgating directly correlates with how frequently these accidents happen. It is essential for drivers to maintain a safe following distance to allow for adequate stopping time, particularly on busy highways where traffic flow can change rapidly. Proper driver education emphasizes the importance of spacing to avoid the increased risk of rear-end collisions.