Practice question

What is the most fuel-efficient cruising speed for most HGVs?

  1. As fast as legally possible
  2. Between 50-56 mph (the speed limiter range), as fuel consumption increases significantly above these speeds
  3. Below 30 mph at all times
  4. It makes no difference what speed you travel at

Answer: B — Between 50-56 mph (the speed limiter range), as fuel consumption increases significantly above these speeds

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