How does rain affect stopping distance?

How does rain affect stopping distance?

• A. It reduces stopping distance and increases tire grip.
• B. It has no effect on stopping distance.
• C. It increases stopping distance and reduces tire traction; slow down and increase following distance.
• D. It improves braking efficiency.

Answer: (C)

Rain makes the road surface slick, reducing tire traction. With less grip, your tires take longer to slow and stop, so the braking distance increases. Because stopping distance grows on wet pavement, you should slow down and increase the following distance to give yourself more time and space if the car in front slows or stops. This matches the idea that rain raises stopping distance and lowers tire traction, and it also aligns with the practical advice to slow down and allow more room between vehicles. The other notions—that rain shortens stopping distance, increases grip, or improves braking—don’t reflect how wet roads affect vehicle control.

Rain makes the road surface slick, reducing tire traction. With less grip, your tires take longer to slow and stop, so the braking distance increases. Because stopping distance grows on wet pavement, you should slow down and increase the following distance to give yourself more time and space if the car in front slows or stops. This matches the idea that rain raises stopping distance and lowers tire traction, and it also aligns with the practical advice to slow down and allow more room between vehicles. The other notions—that rain shortens stopping distance, increases grip, or improves braking—don’t reflect how wet roads affect vehicle control.