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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.
Most modern systems, such as power windows, power seats, and power door locks, are electrically powered. Electrically driven power steering systems have been developed and are used in numerous models. High-efficiency all-electric refrigerant compressors for air conditioning are starting to be used, especially in hybrid or all-electric vehicles.
PD1/3: In Autumn 1946, the Construction and Use regulations were revised, allowing a maximum width for buses of 8 ft (2.4 m), rather than the previous 7 ft 6 in (2.29 m), provided the Traffic Commissioners approved the use of wider buses on routes, in the same way as they already had the power to approve double-deck buses on a route-by-route ...
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]
Most modern heavy duty buses use an extreme RR layout. In transit buses this can be used to make a very low floor level in the first two-thirds of the bus, thus making disabled access much easier. Most tour buses and coaches also employ a similar design, however the free space is usually used for luggage, and sometimes air conditioning equipment.
The bus chassis variant of the International S series is a cowled bus chassis (conventional style) that was produced by International Harvester (later Navistar International) from 1979 to 2004. Produced primarily for school bus applications, the chassis was also produced for other applications, including commercial-use buses and cutaway-cab buses.
The Volvo B7RLE is similar to its predecessor, the B10BLE.In essence, the B7RLE is the front section of the B7L chassis mated with the rear section of the B7R chassis. . Originally, the B7RLE featured the D7C 6-cylinder, 7.3-litre diesel engine with a turbocharger and intercooler, producing 250 or 275 bhp and meeting the Euro III emission stand
The 12M is a bus chassis range manufactured by Indian vehicle manufacturer Ashok Leyland. The "12M" denotes the chassis length which is 11.7 meters. This chassis is primarily aimed at Inter state bus operators has a good presence in Indian roads. The front engine rear wheel driven bus was introduced in 2000s.