Car permit · Following distance

The picture shows one car following another. How much room should a driver leave behind the vehicle ahead?

The picture shows one car following another. How much room should a driver leave behind the vehicle ahead?

Correct answer: A 3-second gap, or one car length for each 10 mph.

Answer options

  1. AA 1.5-second gap, or one car length for each 20 mph
  2. BA 1-second gap, or one car length for each 25 mph
  3. CA 3-second gap, or one car length for each 10 mph Correct

Why

Stay at least 3 seconds, or roughly one car length per 10 mph, behind the vehicle you follow, and double that space when roads are slippery or visibility is poor. Shorter gaps leave too little time to stop if traffic ahead brakes hard.

About this question

Topic: Following distance   License: Car permit

Part of these practice sets:

Where it applies: Used in practice sets for:

Practice the whole set

This question is part of Road Rules (28 questions). Take the full set and check your score.

Practice Road Rules

Practice on your phone.

Practice here in your browser, or use the app with the same questions and explanations. It's free on the App Store.