Revision question · Environmental issues

Why should the height of a load be kept to a minimum?

Revision material from the imported DVSA bank includes source-checked Lanekind learning corrections. These corrections are not newly issued official examination questions, and practice does not reproduce a live test paper.

Answer options

To reduce aerodynamic drag

To increase rolling resistance

To increase momentum

To reduce unloading time

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To reduce aerodynamic dragThis was the right 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.

Reviewed reading for this question

Match the airflow to the body and loadReviewed guidance summary · The DfT handbook’s aerodynamic principles match the inspected roof fairing and the exact tipper/flatbed questions. Historical numerical savings are not repeated.

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