Practice question

At highway speed, the minimum recommended following distance in a combination vehicle is:

  1. Always 2 seconds, regardless of length
  2. 1 second per 10 feet of vehicle length under 40 mph; add 1 second over 40 mph
  3. Half a second per 10 feet
  4. 10 seconds for all speeds

Answer: B — 1 second per 10 feet of vehicle length under 40 mph; add 1 second over 40 mph

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