A Hard rain can limit visibility so that a driver can't see the edges of the road, traffic signs or other cars. On vacation or running an errand, a driver who knows how to manage reduced visibility and slick pavement is more likely to stay in control. If intermittent wipers are used, be certain they are set to a speed that will clear the windshield before visibility is compromised. If windows begin to fog, turn on the car's defroster. Use low-beam headlights to help other drivers see your car and increase visibility.
Many states require headlight use in wet weather.
Slow down and increase following distances. Speed limits are set for ideal road conditions. When it rains, visibility is reduced and braking distances increase. If you are forced to stop in traffic due to poor visibility, turn on emergency flashers immediately and pull as far off the road as possible. Prepare for the Summer Heat Planning a successful summer driving vacation involves more than arranging overnight stays or knowing how many states will be visited on the journey.