Safety margins
In good, dry conditions, what is the typical overall stopping distance at 30 mph?
- 12 metres
- 18 metres
- 23 metresCorrect
- 36 metres
Why?
Rule 126 of The Highway Code and its Typical Stopping Distances chart show that at 30 mph the overall stopping distance is about 23 metres — your thinking distance plus your braking distance, roughly six car lengths. At 70 mph it grows to about 96 metres.
Highway Code rule 126