Safety margins

It is a very hot day and the road surface has become soft. How can this affect your driving?

It improves your grip and braking
It has no effect on tyres
It can reduce grip, affecting steering and braking
Correct
It only affects the engine, not the tyres

Why?

Rule 237 of The Highway Code warns that in hot weather the road surface can become soft, which may affect your steering and braking. Slow down and keep a bigger gap to allow for the reduced grip.

Highway Code rule 237

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