Method and device for operating a vehicle, in particular a commercial or motor vehicle

The method involves detecting a defined section of line data of to-be-traveled route section of commercial vehicle by a detecting device (2). The optimization of wear of the wear component such as brake (3) based on actuating parameters such as operation timing and/or an actuation period of time for wear component. The to-be-traveled route portion of vehicle corresponding to predetermined parameter of auxiliary device (4) is activated, after optimization of wear of wear component. An independent claim is included for device for operating commercial motor vehicle.