A 4-minute lesson from the Rhode Island course. Read the rules and examples, follow the handbook page references, and check your understanding before you move on.
Safe driving starts before the engine turns on. Then, once you're moving, remember that stopping takes far more distance than most people think—and much more on wet or icy roads.
Know the rule
Most collisions are caused by driver error and happen within a few miles of home. Before getting in, check in front of and behind the vehicle for objects, animals or people.
Braking distance is much longer on wet or icy roads because of reduced traction, so drive slower. Roads are especially slippery when rain first starts, as oil, rubber, dirt and water combine.
The front tires lose contact with a wet road and you lose steering. Prevent it with proper tire pressure, lower speed, and by avoiding standing and pooled water.
At 60 mph on dry pavement you need about 240 feet to stop—60 feet before your foot even reaches the brake. If the road is wet, that distance grows, so slow down and leave more room.
Check your understanding
Read the question, decide on an answer, then open it to check the explanation. These are Roadwise study questions based on the source handbook.
What three components together make up your total stopping distance?
Perception, reaction, and braking distance
Reaction, braking, and following distance
Perception, following, and skid distance
Reaction, braking, and coasting distance
Answer: Perception, reaction, and braking distance
Total stopping distance equals perception distance plus reaction distance plus braking distance.