Michigan Drivers Training Segment 1 Practice Test 2026 – Complete Exam Prep

When roads are wet or covered with snow, traction is reduced and braking distances grow. The space you leave to the car ahead — your following distance — must be greater than in dry conditions to give you time to react and stop safely. The three-second rule works as a baseline in good weather, but in rain or snow you should extend that buffer beyond three seconds to account for the extra stopping time and potential skidding or hydroplaning. Speed matters, too: the faster you’re going, the more distance you’ll need.

That’s why increasing your following distance beyond three seconds is the best approach. Maintaining the same distance doesn’t account for longer stopping distances, and locking in a fixed four-second gap isn’t as flexible for varying conditions. Ignoring braking distance would be unsafe.