Concepts inAutomatic checking of instruction specifications
An automatic (also called automatic gearbox, or auto transmission) is one type of motor vehicle transmission that can automatically change gear ratios as the vehicle moves, freeing the driver from having to shift gears manually. Most automatic transmissions have a defined set of gear ranges, often with a parking pawl feature that locks the output shaft of the transmission. Similar but larger devices are also used for heavy-duty commercial and industrial vehicles and equipment.
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