When a road is slippery due to rain, snow or sleet, you must reduce your speed about _________ to get a good grip on the road.

Explanation

When the road is slippery, your vehicle?s tires do not grip as well as they do on a dry road. How slow should you go? On a wet road, you should reduce your speed about 10 mph. On packed snow, you should cut your speed in half. On ice, you must slow to a crawl. It is very dangerous to drive on ice.