Editing Automobile accessory power (section)

==Pneumatic==

Pneumatic (compressed air) systems are rarely found in passenger cars.
Larger vehicles often use [[air brake (road vehicle)|air brakes]] and the pressure may be used to drive other systems. Windshield wipers, automatic gear boxes, and other common hydraulic or vacuum powered accessories are often adapted. On buses where the engine is often at the rear of the vehicle, compressed air may be used for the throttle and clutch. 

[[Bus doors]] are typically air powered, as well as the steps and the [[suspension (vehicle)|suspension]], allowing the bus to lower itself or "kneel" at stops to allow passengers on or off.

[[Central tire inflation system]], [[Locking differential|differential lock]], [[air suspension]] and to power [[pneumatic tool]]s.