Question A vehicle hydroplanes when the: Answers Windshield wipers cannot keep the windshield clear of rain. Tires lose contact with the road surface. Spray from a large truck reduces visibility. Explanation When a vehicle is moving too quickly on a wet surface, the tires can lose all contact with the road surface, causing the vehicle to glide along on the surface of the water. This is referred to as "hydroplaning." Pass your DMV Written Test with flying colors Take me to the cheat sheet Wisconsin This questions appears in the following tests: Wisconsin Practice Test 13 Wisconsin Practice Test 35