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The chassis dynamometer is designed to add the sum of all the forces that are applied to a vehicle when driven on an actual road course to be simulated through the tires and calculated in the test results. Increasing air drag with the speed on the road manifests as increasing braking force of the vehicle wheels.
FWD data is most often used to calculate stiffness-related parameters of a pavement structure. The process of calculating the elastic moduli of individual layers in a multi-layer system (e.g. asphalt concrete on top of a base course on top of the subgrade) based on surface deflections is known as "backcalculation", as there is no closed-form solution.
A decelerometer is a hand held device for measuring dynamic braking forces during a vehicle road test. [3] A vehicle decelerometer operates as if it were, and it could also be known as, an accelerometer as it calculates braking efficiency by using those forces captured during a vehicle's deceleration. A decelerometer is a basic method by which ...
The MOT test (from Ministry of Transport, the former name of the Department for Transport) is a mandatory annual test of safety, road worthiness and exhaust emissions for vehicles over three years old. It is enforced by linking the official MOT database to the payment of Vehicle Excise Duty tax. Prior to November 2014 a tax disc had to be ...
The MOT test was first introduced on a voluntary basis on 12 September 1960 under the direction of the-then Minister of Transport, Ernest Marples, [8] [9] under powers in the Road Traffic Act 1956. The test was originally a basic test including brakes, lights and steering check which was to be carried out after the vehicle was ten years old and ...
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