When there’s snow or ice on the road, drivers are cautious, but rain is such a frequent occurrence that drivers are sometimes over-confident. That’s a mistake that could be costly or even deadly. According to the Federal Highway Administration:
“Most weather-related crashes occur on wet pavement and during rainfall. Each year, 75 percent of weather-related vehicle crashes occur on wet pavement and 47 percent happen during rainfall. Nearly 5,700 people are killed and more than 544,700 people are injured in crashes on wet pavement annually. Every year, over 3,400 people are killed and over 357,300 people are injured in crashes during rainfall.”
Edmunds offers a good refresher on best practice Tips and Techniques for Driving in Rain. But one condition that you should know about and prevent is hydroplaning or aquaplaning. According to SafeMotorist.com:
The term hydroplaning is commonly used to refer to the skidding or sliding of a cars tires across a wet surface. Hydroplaning occurs when a tire encounters more water than it can scatter. Water pressure in the front of the wheel pushes water under the tire, and the tire is then separated from the road surface by a thin film of water and loses traction. The result is loss of steering, braking and power control.
Rubber tires have tread (grooves) that are designed to channel water from beneath the tire. This creates higher friction with the road surface and can help prevent or minimize instances of hydroplaning.
This video from Defensive Driving offers a great overview of hydroplaning, how to avoid it and what to do if it happens.