UK Driver CPC Part 1 Theory Test

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

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

Correct Answer:

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

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