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  2. Commercial driver's license - Wikipedia

    en.wikipedia.org/wiki/Commercial_driver's_license

    A commercial driver's license is required to operate a tractor-trailer for commercial use. A commercial driver's license (CDL) is a driver's license required in the United States to operate large and heavy vehicles (including trucks, buses, and trailers) or a vehicle of any size that transports hazardous materials or more than 15 passengers (including the driver).

  3. History of the trucking industry in the United States - Wikipedia

    en.wikipedia.org/wiki/History_of_the_trucking...

    A "Victory Oil" semi-trailer truck from 1943. The trucking industry in the United States has affected the political and economic history of the United States in the 20th century. Before the invention of automobiles, most freight was moved by train or horse-drawn vehicle. During World War I, the military was the first to use trucks extensively.

  4. Trucking industry in the United States - Wikipedia

    en.wikipedia.org/wiki/Trucking_industry_in_the...

    A common property-carrying commercial vehicle in the United States is the tractor-trailer, also known as an "18-wheeler" or "semi". The trucking industry serves the American economy by transporting large quantities of raw materials, works in process, and finished goods over land—typically from manufacturing plants to retail distribution centers.

  5. Drunk driving in the United States - Wikipedia

    en.wikipedia.org/wiki/Drunk_driving_in_the...

    General and cited sources. Drunk driving in the United States. Drunk driving is the act of operating a motor vehicle with the operator's ability to do so impaired as a result of alcohol consumption, or with a blood alcohol level in excess of the legal limit. [ 1 ] For drivers 21 years or older, driving with a blood alcohol concentration (BAC ...

  6. Hazardous Materials Transportation Act - Wikipedia

    en.wikipedia.org/wiki/Hazardous_Materials...

    The Hazardous Materials Transportation Act (HMTA), enacted in 1975, is the principal federal law in the United States regulating the transportation of hazardous materials. Its purpose is to "protect against the risks to life, property, and the environment that are inherent in the transportation of hazardous material in intrastate, interstate ...

  7. Federal Motor Carrier Safety Administration - Wikipedia

    en.wikipedia.org/wiki/Federal_Motor_Carrier...

    Federal Motor Carrier Safety Administration. The Federal Motor Carrier Safety Administration (FMCSA) is an agency in the United States Department of Transportation that regulates the trucking industry in the United States. The primary mission of the FMCSA is to reduce crashes, injuries, and fatalities involving large trucks and buses.

  8. Federal Bridge Gross Weight Formula - Wikipedia

    en.wikipedia.org/wiki/Federal_Bridge_Gross...

    The Federal Bridge Gross Weight Formula, also known as Bridge Formula B or the Federal Bridge Formula, is a mathematical formula in use in the United States by truck drivers and Department of Transportation (DOT) officials to determine the appropriate maximum gross weight for a commercial motor vehicle (CMV) based on axle number and spacing.

  9. Hours of service - Wikipedia

    en.wikipedia.org/wiki/Hours_of_service

    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.

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