What happens to the average stopping distance on wet roads or bad surfaces?

The average stopping distance on wet roads or bad surfaces increases significantly due to the reduced traction between the vehicle's tires and the road. When the surface is wet, the tires have a harder time gripping the road, which means that it takes longer for the vehicle to come to a complete stop. This phenomenon occurs because water creates a layer between the tires and the surface, diminishing the friction that is crucial for effective braking.

Additionally, factors such as tire tread depth, vehicle speed, and the condition of the braking system also play important roles in stopping distances. On wet or slippery surfaces, drivers must adjust their behavior by allowing more distance between their vehicle and the one in front to account for the longer stopping distance. Understanding this can help drivers make safer decisions while driving in adverse weather conditions.