Revision question · Environmental issues

Your lorry has been fitted with wind deflectors. How will they affect your vehicle?

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

They'll increase the fuel consumption

They'll reduce the stability

They'll require increased tyre pressures

They'll reduce the wind resistance

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They'll reduce the wind resistanceThis was the right answer

Wind deflectors direct the wind either around or over your vehicle, so reducing the wind resistance. The vehicle then requires less power to make progress against the wind, and so will use less fuel.

Reviewed reading for this question

Reduce the air resistance the engine must overcomeReviewed guidance summary · The direct function is drag reduction, leading to lower fuel consumption, not braking or protection from spray.

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