Quick Answer
Driving during heavy rain and potential flooding poses significant risks of hydroplaning, losing control, and becoming stranded in floodwaters. Vehicle flooding can cause electrical short circuits, and swift water can sweep a vehicle away. The greatest risks of driving during heavy rain include reduced visibility, slippery roads, and flash flooding.
Hydroplaning and Vehicle Loss of Control
Hydroplaning occurs when a vehicle’s tires ride on a layer of water instead of the road surface, causing the vehicle to lose traction and skid. This can happen at speeds as low as 35 mph, and it’s more likely on roads with standing water or flooded areas. To avoid hydroplaning, drivers should slow down to a safe speed, and maintain a safe distance from the vehicle ahead. In the event of hydroplaning, take your foot off the gas, don’t slam on the brakes, and steer gently in the direction of the skid.
Vehicle Flooding and Electrical Short Circuits
When a vehicle floods, water can seep into the electrical system and cause short circuits, leading to fires or explosions. Water can also contaminate the vehicle’s fuel system, causing the engine to stall or fail. If your vehicle becomes flooded, stay inside and await help, but be aware of the potential for electrical shock or fire. Never attempt to start a flooded vehicle, as this can cause further damage.
Swift Water and High Ground
Swift water can sweep a vehicle away, especially if it’s traveling at high speeds or if the vehicle is caught off guard. To escape from floodwaters, look for high ground or a sturdy structure that can provide temporary shelter. If you’re driving and encounter floodwaters, do not attempt to drive through them. Instead, turn around and find a safe route or wait for help to arrive.
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