What should drivers avoid doing while driving in heavy rain?

Using cruise control in heavy rain is something drivers should avoid because it can lead to a loss of traction and control of the vehicle. When roads are wet, the risk of hydroplaning increases, which is when the tires can lose contact with the road surface and slide on the water. If cruise control is engaged, a driver might not react quickly enough to maintain proper control if hydroplaning occurs.

By avoiding cruise control, drivers can respond more effectively to changing road conditions, adjust their speed as necessary, and maintain better control of their vehicle. In scenarios of heavy rain, it's crucial for drivers to be fully attentive to the road and able to make immediate adjustments to their driving in response to the conditions. This proactive approach contributes to safer driving during adverse weather.

In contrast, increasing following distance, turning on headlights, and slowing down are all appropriate actions during heavy rain, as they help to improve visibility and reaction time.