CDL · Speed

On a dry road at 55 mph, which comes closest to the total distance you need to stop your vehicle completely?

Correct answer: Roughly one football field's length.

Answer options

  1. ARoughly two lengths of your vehicle
  2. BRoughly half a football field's length
  3. CRoughly one football field's length Correct

Why

Total stopping distance combines the ground you cover while noticing a hazard, while reacting to it, and while the brakes slow you to a stop. For a heavy vehicle traveling 55 mph on dry pavement, that total comes to about one football field, far more than half a field or a couple of vehicle lengths.

About this question

Topic: Speed   License: CDL

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Where it applies: Asked in every state.

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