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The California Bearing Ratio (CBR) is a measure of the strength of the subgrade of a road or other paved area, and of the materials used in its construction. The ratio is measured using a standardized penetration test first developed by the California Division of Highways for highway engineering. [1] Empirical tests measure the strength of the ...
Falling weight deflectometer. A falling weight deflectometer (FWD) is a testing device used by civil engineers to evaluate the physical properties of pavement in highways, local roads, airport pavements, harbor areas, railway tracks and elsewhere. The data acquired from FWDs is primarily used to estimate pavement structural capacity, to ...
The AASHO road test was to study the performance of pavement structures of known thickness under moving loads of known magnitude and frequency. [citation needed] The study was carried out from August 1956 to November 30, 1960 in Ottawa, Illinois [2] and has been used as a primary source of experimental data when vehicle wear to highways is ...
The service life of the road is thereby reduced with approximately the fourth power of the axle load. [1] The accuracy of the law of the fourth power is disputed among experts, since the test results depend on many other factors, such as climatic conditions, in addition to the factors mentioned above. [2]
A chassis dynamometer, informally referred to as a rolling road[1] or a dyno, is a mechanical device that uses one or more fixed roller assemblies to simulate different road conditions within a controlled environment, and is used for a wide variety of vehicle testing and development purposes. All Wheel Drive Chassis Dynamometer.
Euro NCAP is a voluntary vehicle safety rating system created by the Swedish Road Administration, the Fédération Internationale de l'Automobile and International Consumer Research & Testing, backed by fourteen members, and motoring and consumer organisations in several EU countries. [6][7] They provide European consumers with information ...
1:46.0 – Audi 80 1.8E (May's car in '£100 car' challenge.) 1:48.0 – Volvo 760 GLE V6 (Clarkson's car in '£100 car' challenge.) 1:48.0 – Vauxhall Astra Diesel Police car (Driven as modern-day equivalent to set target time in 'Budget Police Car' challenge.) 1:48.0 – 1988 BMW 325i (E30) convertible (Clarkson's car in '4-seat convertibles ...
Driving test. A driving test (also known as a driving exam or driver's test in some places) is a procedure designed to test a person's ability to drive a motor vehicle. It exists in various forms worldwide, and is often a requirement to obtain a license to drive a vehicle independently. A driving test generally consists of one or two parts: the ...
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