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  2. Air brake (road vehicle) - Wikipedia

    en.wikipedia.org/wiki/Air_brake_(road_vehicle)

    Truck air-actuated disc brake. An air brake or, more formally, a compressed-air-brake system, is a type of friction brake for vehicles in which compressed air pressing on a piston is used to both release the parking/emergency brakes in order to move the vehicle, and also to apply pressure to the brake pads or brake shoes to slow and stop the vehicle.

  3. 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).

  4. Driver's licenses in the United States - Wikipedia

    en.wikipedia.org/wiki/Driver's_licenses_in_the...

    This restriction is issued when a driver either fails the air brake component of the general knowledge test or performs the CDL road skills test in a vehicle not equipped with air brakes. M: CDL-A holders may operate CDL-B school buses only. N: CDL-A and CDL-B holders may operate CDL-C school buses only. O: Driver limited to pintle hook ...

  5. Driving licence in Lebanon - Wikipedia

    en.wikipedia.org/wiki/Driving_licence_in_Lebanon

    This restriction is issued when a driver either fails the air brake component of the general knowledge test or performs the road skills test in a vehicle not equipped with air brakes. M: CDL-A holders may operate CDL-B school buses only. N: CDL-A and CDL-B holders may operate CDL-C school buses only. O: Driver limited to pintail hook trailers only.

  6. S-cam - Wikipedia

    en.wikipedia.org/wiki/S-cam

    It is normally powered by air, but hydraulic power can be used too. The S-cam foundation brake is being used in over 85% of vehicles in the U.S. that run with air brakes. [1] S-cam's are only used with drum brakes because the cam pushes on the brakes which rubs against the rotating drum, and thus slowing the vehicle. [2]

  7. College football award winners: Full list of winners for 2024 ...

    www.aol.com/college-football-award-winners-full...

    We're firmly in awards season with the 2024 college football regular season and conference championships complete.. While the 2024 Heisman Trophy will be awarded on Saturday, the nation's top ...

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