Method for controlling operation of motor vehicle, e.g. bus, automatic transmission determines position of ignition key for locking of parking brake

摘要

The method for controlling the operation of a motor vehicle automatic transmission uses an additional gearbox (12) positioned between the main gearbox (8) and the vehicle wheels and actuates a parking brake lock using a selector which operates below a set speed or is switched in an operating position (N) in which the shaft can turn freely. Retraction of the key is prevented when the main gearbox is operative and the secondary gearbox is not operative.