braking distance

Also found in: Dictionary, Wikipedia.

Braking Distance


the distance traveled by a motor vehicle, train, or streetcar from the instant a braking device is applied until a complete stop is achieved. The total braking distance, or stopping distance, includes the distance traveled from the instant the driver or engineer perceives the need to stop until the brakes are applied. The braking distance is proportional to the square of the velocity, the brake response speed, the load on the wheels to which the braking action is applied, and the coefficient of adhesion between the wheels and the road or tracks; the total braking distance also depends on the reaction time of the driver or engineer. The state of the tire tread and the road surface also have a great effect on the braking distance of motor vehicles.

In the USSR, in accordance with the Road Traffic Rules, the maximum permissible braking distance for a road vehicle at a velocity of 30 km/hr on a dry, level, hard road surface is 7.2 m for passenger cars, 9.5–11 m for trucks, and 7.5–8.2 m for motorcycles. The calculated braking distances for trains are established in the Regulations for the Technical Operation of Railroads.


braking distance

The distance within which an airplane can be brought to a stop when rolling on the ground at any given speed.
References in periodicals archive ?
Shod with winter tyres that substantially cut braking distances on wet or icy roads and with a highly technical and intelligent all wheel drive system which 'read's the road and keeps the vehicle stable, it adds up to an SUV which is a thoroughbred all weather vehicle.
The defect affecting the Fuso Rosa bus springs from the weakness of a component in the braking aid mechanism designed to shorten the braking distance even when the brake is pressed with insufficient power, it said.
The braking distance is the minimum distance it takes to stop a vehicle traveling on a particular roadway at a specific speed.
DETROIT -- Siemens VDO's Electronic Wedge Brake (EWB) has shown an average braking distance reduction of approximately 15 percent over vehicles equipped with conventional hydraulic brakes during recent driving tests on ice and snow.
With normal tyres the braking distance required is a further eight metres another two car lengths and a total of 43 metres.
A vehicle fitted with winter tyres will come to standstill on a snow-covered road (from a speed of just 30mph) after 35 metres - with normal tyres the braking distance required is a further 8 metres (43 metres).
With normal tyres, the braking distance required is a further eight metres - that is another two car lengths.
Power braking blocks - helps enhance stopping power for shorter braking distance at high speeds; and,
Line speed is in the section VlEirskE' Pass - Kunovice 80 and 70 km / h with sub- limits , braking distance of 700 m in the section Kunovice - Veseli nad M.
Increase your braking distance on wet roads and slow down because rainfall on dry roads can result in very slippery conditions.
0 of the Taiwanese brand in braking distance in dry asphalt conditions.