Stopping distance
The distance stopping of a vehicle is the theoretical conventional distance necessary to a vehicle to stop taking into account its speed.
Definition
It is calculated as the sum of the distance covered during the time of perception reaction (Distance of perception-reaction) and of the Distance braking.
Value according to speed
The values of the stopping distance are, on a dry road of average adherence (correspondent with coefficient of longitudinal friction equal to 0,7 (see Distance braking)) and according to speed, the following ones:
In road design, to evaluate the sight distance on a fixed obstacle which corresponds to the stopping distance of the vehicle, one takes as reference a coefficient of longitudinal friction corresponding to a slightly wet road and a worn tire (from 0,31 to 0,46 for France and from 0,28 to 0,38 for Canada), which gives different distances stopping and definitely longer:
See too
Internal bonds
- Security distance
- Distance braking
- Distance from perception-reaction
- Maximum speed authorized in France
- Automatic radar
- Automatic radar in France
External bonds
- To include/understand the principal parameters of geometrical design of the roads” - Sétra - January 2006.
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