Which speed is deemed unsafe for school buses in terms of stopping distance?

When considering the stopping distance for school buses, it is essential to recognize that higher speeds significantly increase the distance needed to stop safely. Buses are substantial vehicles, and as the speed increases, the momentum also increases, which requires a longer stopping distance.

Going over 50 mph is deemed unsafe for school buses because at that speed, the likelihood of an accident increases significantly. The stopping distance can extend beyond what is reasonable for a bus to react, especially in school zones where children are present and may unexpectedly cross the road. This speed can hinder a driver's ability to safely stop in time to avoid potential hazards, making it critical for school bus drivers to adhere to lower speed limits, particularly in areas where they are picking up or dropping off students.

In contrast, speeds of under 30 mph, at 45 mph, or any speed under legal limits do not necessarily present the same risks concerning stopping distance. In fact, adhering to those lower speeds is typically encouraged in school zones to ensure the safety of all children.