What factor can significantly affect stopping distance?

Weather conditions play a crucial role in determining stopping distance due to their impact on road traction and visibility. For example, rain, snow, ice, or fog can create slippery surfaces or reduce visibility, making it harder for a driver to stop safely.

In wet or icy conditions, the tires may not grip the road effectively, which increases the distance needed to come to a complete stop. Additionally, decreased visibility during heavy rain or fog can lead to delayed reaction times, as drivers may not see hazards or the brake lights of cars ahead until it's too late.

As a result, understanding the impact of weather conditions is vital for safe driving practices, allowing drivers to adjust their speed and following distance accordingly to ensure they can stop safely when necessary.