What is required when traveling at high speeds?

When traveling at high speeds, a greater stopping distance is required due to the physics of motion. As speed increases, the distance it takes to stop a vehicle also increases significantly. This is because the stopping distance comprises both the reaction distance (the distance covered while the driver reacts to a hazard) and the braking distance (the distance it takes to come to a complete stop after the brakes have been applied).

The faster a vehicle is moving, the more distance it will cover during the driver's reaction time, and the more distance is needed to slow down effectively. The force required to stop a vehicle increases with speed, resulting in longer braking distances. This necessitates maintaining a greater distance from the vehicle ahead and adjusting driving behavior to account for the longer stopping distances required at higher speeds, which enhances safety on the road.

Other options, such as lower visibility, reduced tire pressure, and acceleration management, may relate to driving conditions or vehicle control but do not specifically address the fundamental change in stopping requirements associated with high-speed travel.