In heavy rain conditions, must the driver modify their speed and the safety distance regarding the vehicle ahead?

Question

DentroTest · Accepted Answer

The correct answer is to reduce speed and increase distance. This is due to two fundamental physical factors on wet pavement: Reduced Grip (Adhesion): Water creates a film between the tire and the asphalt, decreasing friction. This causes the braking distance to increase significantly (up to double that of dry conditions). Hydroplaning Risk: At higher speeds, tires have less capacity to evacuate water through their treads, losing contact with the ground. Therefore, reducing speed allows you to maintain control, and increasing the safety distance compensates for the reduced braking efficiency. The other options are incorrect because rain never improves grip, and reducing speed helps drain water, not accumulate it.

In heavy rain conditions, must the driver modify their speed and the safety distance regarding the vehicle ahead?

Want to pass the Permit B (English) theory test first time?

📚 Keep practicing with more questions from Adherence, Tires and Brakes

Where to Put Snow Chains?

How to Brake in a Curve in an Emergency

How far can studs extend from winter tires in Spain?

Driving on Snow

Braking Distance on Ice

When to Use Snow Chains

Braking Distance on Wet Roads

How Weather Affects Braking Distance

What is aquaplaning and what sensation does it cause?

Aquaplaning Effect and Tires