1998 Buick Century Owner's Manual - Page 113

Cruise Control (Option) When you apply your brakes, the cruise control shuts off. CAUTION: Cruise control can be dangerous where you can't drive safely at a steady speed. So, don't use your cruise control on winding roads or in heavy traffic. Cruise control can be dangerous on slippery roads. On such roads, fast changes in tire traction can cause needless wheel spinning, andyou could lose control. Don't use cruise control on slippery roads. With cruise control,you can maintain a speed of about 25 mph (40 k d h ) or more without keeping your foot on the accelerator. This can really help on long trips. Cruise controldoes not work at speeds below about 25 mph (40 kmk). 2-37