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Hours of service ( HOS) regulations are issued by the Federal Motor Carrier Safety Administration (FMCSA) and govern the working hours of anyone operating a commercial motor vehicle (CMV) in the United States. These regulations apply to truck drivers, commercial and intercity bus drivers, and school bus drivers who operate CMVs.
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.
In transportation engineering, the K factor is defined as the proportion of annual average daily traffic occurring in an hour. [1] This factor is used for designing and analyzing the flow of traffic on highways. K factors must be calculated at a continuous count station, usually an "automatic traffic recorder", for a year before being determined.
Annual average daily traffic. Annual average daily traffic, abbreviated AADT, is a measure used primarily in transportation planning, transportation engineering and retail location selection. Traditionally, it is the total volume of vehicle traffic of a highway or road for a year divided by 365 days. AADT is a simple, but useful, measurement of ...
A simple unit of freight is the kilogram-kilometre (kgkm), the service of moving one kilogram of payload a distance of one kilometre. Payload quantity. kilogram (kg), the standard SI unit of mass. tonne (t), a non-SI but an accepted metric unit, defined as 1,000 kilograms. "short ton" is used in the US; 1 short ton = 2,000 pounds = 0.907 tonnes.
Passengers per hour per direction. Passengers per hour per direction ( p/h/d ), [1] passengers per hour in peak direction [2] ( pphpd) or corridor capacity [3] [4] is a measure of the route capacity of a rapid transit or public transport system.
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