2002 Buick Century Owner's Manual - Page 202

D Know how to go uphill. You may want to shift CAUTION: Coasting downhill in NEUTRAL (N) or with the ignition off is dangerous. Your brakes will have to do all the work of slowing down. They could get so hot that they wouldn't work well. You would then have poor braking or even none going down a hill. You could crash. Always have your engine running and your vehicle in gear when you go downhill. down to a lower gear. The lower gears help cool your engine and transaxle, and you can climb the hill better. D Stay in your own lane when driving on two-lane roads in hills or mountains. Don't swing wide or cut across the center of the road. Drive at speeds that let you stay in your own lane. could be something in your lane, like a stalled car or an accident. D As you go over the top of a hill, be alert. There D You may see highway signs on mountains that warn of special problems. Examples are long grades, passing or no-passing zones, a falling rocks area or winding roads. Be alert to these and take appropriate action. 4-25