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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 ...
Fourth power law. The fourth power law (also known as the fourth power rule) states that the greater the axle load of a vehicle, the stress on the road caused by the motor vehicle increases in proportion to the fourth power of the axle load. This law was discovered in the course of a series of scientific experiments in the United States in the ...
The international roughness index (IRI) is the roughness index most commonly obtained from measured longitudinal road profiles. It is calculated using a quarter-car vehicle math model, whose response is accumulated to yield a roughness index with units of slope (in/mi, m/km, etc.). [1][2] Although a universal term, IRI is calculated per ...
The owners of CMSC Driving School have cried foul. The family-run company based in West Boylston signed a one-year contract to run three test sites in Avon, Worcester and Framingham, with an ...
In October 2020, the DMV developed a road test for teens under 18 seeking a full provisional license. The test involved examiners setting up cones in large parking lots and watching the driver ...
The Swedish National Road and Transport Research Institute has developed a moose crash test dummy called "Mooses". The dummy (which is made with similar weight, centre of gravity and dimensions to a live moose) is used to simulate realistic moose collisions. Australian car manufacturers use crash test kangaroo dummies for similar reasons.
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 ...
On many of his earlier road tests, his wife Cynthia would accompany him as his photographer and almost always his black Labrador Retriever, "Boji". [citation needed] His later assistant was professional driver and photographer Jim McMichael who was photographed sitting—or lying—in the trunk of so many test cars McCahill eventually began calling him the " official trunk tester".