Safety margins

What two parts make up your overall stopping distance?

Speed limit and braking distance
Reaction time and fuel used
Thinking distance plus braking distance
Correct
Following distance plus speed

Why?

Rule 126 of The Highway Code shows overall stopping distance as thinking distance (while you react) plus braking distance (once the brakes are on). Both grow with speed, which is why higher speeds need much longer gaps.

Highway Code rule 126

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