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The audit activity and the resultant motor carrier safety rating has been criticized for being imperfect, and perhaps misleading. Studies [2] [3] have shown that for a considerable number of audit items, correlation coefficients between audit item outcome and actual safety performance have counter-intuitive signs: the better the compliance rating of firms, the worse their accident rates.
Level of service (transportation) Level of service (LOS) is a qualitative measure used to relate the quality of motor vehicle traffic service. LOS is used to analyze roadways and intersections by categorizing traffic flow and assigning quality levels of traffic based on performance measure like vehicle speed, density, congestion, etc.
The National Highway Traffic Safety Administration (NHTSA / ˈnɪtsə / NITS-ə) [8] is an agency of the U.S. federal government, part of the Department of Transportation, focused on transportation safety in the United States. NHTSA is charged with writing and enforcing Federal Motor Vehicle Safety Standards as well as regulations for motor ...
During the Alliance's 2016 International Roadcheck, inspectors performed 62,796 inspections and took 9,080 trucks and 1,436 drivers out of service. Brakes and driving hours were the top violations. [7] In 2021, the group reported that its International Roadcheck inspected 40,000 vehicles, and found 85.3% were in compliance. [8]
Weigh station. Weigh station along Interstate 74 / Interstate 77 in North Carolina. A weigh station is a checkpoint along a highway to inspect vehicular weights and safety compliance criteria. Usually, trucks and commercial vehicles are subject to the inspection. Weigh stations are equipped with truck scales, some of which are weigh in motion ...
Pavement condition index. The pavement condition index (PCI) is a numerical index between 0 and 100, which is used to indicate the general condition of a pavement section. The PCI is widely used in transportation civil engineering [1] and asset management, and many municipalities use it to measure the performance of their road infrastructure ...
Vehicle inspection is a procedure mandated by national or subnational governments in many countries, in which a vehicle is inspected to ensure that it conforms to regulations governing safety, emissions, or both. Inspection can be required at various times, e.g., periodically or on the transfer of title to a vehicle.
A department of transportation (DOT or DoT) is a government agency responsible for managing transportation. The term is primarily used in the United States to describe a transportation authority that coordinates or oversees transportation-related matters within its jurisdiction. In the United States, the largest DOT is the United States ...