Revision question · Motorcycle handling

What would make a rainbow-coloured pattern on a wet road surface?

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.

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An uneven road surface

A worn road surface

Fuel spilt on the road

Mud on the road

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Fuel spilt on the roadThis was the right answer

If fuel, especially diesel, is spilt on the road, it will make the surface very slippery. In wet weather, it can be seen as a rainbow-coloured pattern on the road.

Reviewed reading for this question

Recognise oil on a wet roadReviewed guidance summary · NOAA directly explains the street-puddle rainbow mechanism; the question distinguishes fuel from mud and road wear.

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