What effect does an increase in speed have on traction?

An increase in speed generally decreases traction due to the way tires interact with the road surface. As speed increases, the force of the vehicle pressing down on the road surface becomes less effective at maintaining grip. This is primarily because the tires have less time to respond to the road's surface variations and imperfections. When a vehicle moves too quickly, especially in conditions such as wet, icy, or uneven surfaces, the likelihood of skidding or losing control significantly increases.

At higher speeds, the centrifugal force acting on a vehicle when cornering is also greater, which can lead to a loss of grip on the tires, making it harder for the driver to maintain control. Furthermore, faster speeds can result in longer stopping distances, which further highlights the importance of traction in ensuring a safe and responsive driving experience.

Understanding this relationship between speed and traction is critical for school bus drivers, as they are responsible for the safety of their passengers. Properly managing speed ensures not only the safety of the bus occupants but also that of pedestrians and other road users.