Practice question

In fog, why should you increase your following distance?

  1. To reduce your own visibility requirements.
  2. To allow more time to react to hazards due to reduced visibility.
  3. To ensure you can pass other vehicles quickly.
  4. To save fuel.

Answer: B — To allow more time to react to hazards due to reduced visibility.

Fog cuts how far you can see, so you have less time to spot hazards and react. Increasing the distance to the vehicle ahead gives you more time to notice what’s happening and to slow down or stop safely if the leader slows, stops, or another hazard appears in your lane. That extra space is a safety margin that helps compensate for the slower reaction and reduced sight distance in fog. The other ideas aren’t about safety in fog—they don’t address the need for more time and space to respond in low visibility.

Practice more: Michigan Drivers Training Segment Segment 2 Practice Test →