What should a driver do when driving in heavy rain?

When driving in heavy rain, it's crucial to reduce speed, increase following distances, and use appropriate lights. Heavy rain significantly affects visibility and road conditions, which can lead to a greater likelihood of hydroplaning and losing control of the vehicle. By reducing speed, a driver can maintain better control and reaction time to any sudden changes in the environment or in traffic.

Increasing following distances allows for more time to react to the vehicle in front, as stopping distances can be significantly longer on wet roads. Additionally, using appropriate lights, such as dipped headlights, improves visibility for both the driver and other road users, ensuring everyone can see and be seen clearly despite adverse weather conditions. This combination of actions promotes safer driving practices in challenging rain conditions, reducing the risk of accidents.