Commercial Driver’s License (CDL) Practice Exam

The recommended following distance when traveling at speeds over 35 MPH is typically based on the principle that drivers should allow sufficient space to react to sudden stops and emergencies effectively. The correct standard is to maintain a following distance of 1 second for every 25 feet of vehicle length when traveling at speeds exceeding 35 MPH.

This guideline helps ensure that drivers have adequate time to respond if the vehicle ahead slows down or stops unexpectedly. By considering the length of the vehicle in conjunction with the speed, this formula assists in calculating a safe distance that accounts for the increased stopping and reaction time needed at higher speeds.

Maintaining a proper following distance not only promotes road safety but also reduces the chances of collisions. Trucks and larger vehicles require more room to stop, and having a clear understanding of the appropriate following distance plays a crucial role in safe driving practices.