Stopping Distance

Brake in time at 25 / 45 / 65 mph (real physics).

IntermediateLesson 3: Natural Forces Affecting the Driver

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How to use this sim

First, watch the sim drive the maneuver correctly. Then tap Your turn and do it yourself — one step at a time with the action button, following the checklist below. Hit Restart to watch again anytime.

Common mistakes to avoid

Underestimating higher speeds — braking distance grows with the square of speed.
Forgetting reaction time: you keep rolling before the brakes even bite.
Driving too fast for how far ahead you can actually see.