Patent ID: 7139650

Claim:
Process for the operation of a vehicle unit, which consists of a motor vehicle to which a trailer is coupled, the process comprising: (a) providing a motor vehicle that is equipped with a plurality of electronic systems for controlling operating conditions of the vehicle unit, the electronic systems including an electronic braking system (EBS), an electronic engine output control system (EMS), an electronic drive-train control system (ASS) and an electronic steering control system (ELS); and (b) automatically controlling the operating conditions achieved by the vehicle unit through the cooperation of at least two of the systems in the group of the electronic braking system (EBS), the electronic engine output control system (EMS), the electronic drive-train control system (ASS) and the electronic steering system (ELS), such that when the vehicle unit achieves an operating condition “stop on an incline or a decline”, at least one of the electronic engine output control system (EMS), the electronic drive-train control system (ASS) and the electronic braking system (EBS) holds the vehicle unit stationary.