Revision question · Vehicle loading

Tankers carrying liquids can experience the 'wave effect'. What helps to reduce this problem?

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

Spray guards

Harsh braking

Baffle plates

Wind deflectors

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Baffle platesThis was the right answer

Baffles reduce liquid movement and the forces produced during changes of speed or direction, but do not eliminate surge. Some tanks are unbaffled, so know the actual tank and drive smoothly.

Reviewed reading for this question

Allow for liquid movement when slowing and turningReviewed guidance summary · The inspected liquid tanker can experience surge; baffles reduce rather than eliminate it, and are not fitted to every tank.

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