An arrangement for monitoring and or controlling the driving state of a self-propelled agricultural working machine comprising a variable-position interface for attaching an implement that is provided with a control device. Vehicle-specific data, a position signal regarding the position of the interface, and implement data regarding physical properties of an implement mounted on the interface can be supplied to the control device. The control device is operated to evaluate at least one the driving state of the working machine, taking into consideration the above-mentioned signals and data to control the working machine.