Car permit · Following distance

What is the least amount of space the driver of the blue car should keep behind the red car?

What is the least amount of space the driver of the blue car should keep behind the red car?

Correct answer: One car length for each 10 mph, or 3 seconds.

Answer options

  1. AOne car length for each 30 mph, or 1 second
  2. BOne car length for each 10 mph, or 3 seconds Correct
  3. COne car length for each 20 mph, or 1.5 seconds

Why

The usual guideline is one car length for every 10 mph or, more simply, a 3-second gap: count from the moment the car ahead passes a landmark until you pass it. The other choices leave much less room than either measure calls for.

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Topic: Following distance   License: Car permit

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