Why should the height of a load be kept to a minimum?
- A To reduce aerodynamic drag
- B To increase rolling resistance
- C To increase momentum
- D To reduce unloading time
Why this is the answer
Keeping the height of the load as low as possible will reduce the wind resistance of the vehicle. This will help to save fuel. It's particularly relevant when using a flat-bodied lorry or trailer.
Why the other answers don't fit
- B
- To increase rolling resistance — Rolling resistance comes from the tyres and the weight, and you would not want to increase it.
- C
- To increase momentum — More momentum means more to stop, which is not something to aim for.
- D
- To reduce unloading time — How quickly it comes off depends on the load and the equipment, not its height.
Where this comes from
- Driving Goods Vehicles — section 13
Rule numbers link to The Highway Code on gov.uk.
Where this question comes from
The question, its options and the explanation are reproduced word for word from the DVSA revision question bank under licence. The licence requires them to appear unaltered, so we cannot reword them and neither can anyone else — that is why you will meet the same wording on other sites. Everything else on this page is written by Theory Hub: the explanation of why each wrong answer is wrong, the topic guide and the revision notes.
Asked in: Lorry & Bus (LGV/PCV)
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