1994 GMC Safari Owner's Manual - Page 169

Hydroplaning Hydroplaning is dangerous. So much water can build up under your tires that they can actually ride on the water.This can happen if the road wet is enough and you're going fast enough. When your vehicleis hydroplaning, it has little or no contact with the road. Hydroplaning doesn't happen often. But it can if your tireshaven't much tread or if the pressure in one ormore is low.It can happen if a lot of water is standing on the road. If you can see reflections from trees, telephone poles, or other vehicles, and raindrops "dimple" the water'ssurface, there could be hydroplaning. Hydroplaning usually happens at higher speeds. There just isn't a hard and fast rule about hydroplaning. The best advice is to slow down when it is raining. Some Other Rainy Weatherlips Turn on your low-beam headlights - not just your parking lights - to help make you more visible to others. Besides slowing down, allow some extra following distance. And be especially careful when you pass another vehicle. Allow yourself more clear room ahead, and be prepared to have your view restricted by road spray. Have good tires with proper tread depth. (See "Tires" in theIndex.) City Driving One of the biggest problems with city streets is the amount of traffic on them. You'll wantto watch out forwhat the other drivers are doing and pay attention to traffic signals.