Method to enhance safety of vehicle driving with automatic transmission by signaling acceptance of desired change of running state of a vehicle and system for transmission control

摘要

The method involves signaling acceptance of a desired change after actuating a state preselection device by controlling the gearbox unit using basic driving states forwards, reverse and neutral/idle. It involves forming a signal characterizing operation of the selection device, detecting and evaluating information re the current gear and the change and indicating whether the desired state is activated or cannot be activated by different signals. Independent claims are also included for the following: a system for controlling a gearbox unit.