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L: Drivers are restricted from operating a commercial vehicle with air brakes. 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.
The requirements apply to passenger cars, multi-purpose passenger vehicles, trucks, buses, trailers, and motorcycles, and to hydraulic, air, vacuum brake hose, plastic air brake tubing, brake hose and plastic air brake tubing assemblies, and brake hose and plastic air brake tubing end fittings for use in those vehicles. [1]
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).
FMVSS No. 131: [33] School bus pedestrian safety devices; FMVSS No. 135: [34] Light vehicle brake systems; FMVSS No. 136: [35] Electronic stability control systems on heavy vehicles; FMVSS No. 138: [36] Tire-pressure monitoring systems; FMVSS No. 139: [37] New pneumatic radial tires for light vehicles
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.
When a school bus is sold for usage outside of student transport, NHTSA regulations require that its identification as a school bus be removed. [2] To do so, all school bus lettering must be removed or covered while the exterior must be painted a color different than school bus yellow; the stop arm(s) and warning lamps must be removed or ...
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The Blue Bird All American is a series of buses produced by American school bus manufacturer Blue Bird Corporation (originally Blue Bird Body Company) since 1948. Originally developed as a yellow school bus (its most common configuration), versions of the All American have been designed for a wide variety of applications, ranging from the Blue Bird Wanderlodge luxury motorhome to buses for law ...