Abstract: A warning system and a method for alerting a driver of a vehicle that the parking brake of the vehicle is not engaged by generating a warning when the following conditions are simultaneously fulfilled: the ignition of the vehicle is on, the driver access door of the vehicle cabin is open, no throttle lever, or clutch lever or brake lever of the vehicle is activated, the gear shift lever of the vehicle is in the neutral position, and the parking brake is not engaged, and not when—the pressure of a pneumatic circuit associated with the parking brake is below a threshold,—the vehicle speed exceeds a threshold.

Abstract: A warning system and a method for alerting a driver of a vehicle that the parking brake of the vehicle is not engaged by generating a warning when the following conditions are simultaneously fulfilled: the ignition of the vehicle is on, the driver access door of the vehicle cabin is open, no throttle lever, or clutch lever or brake lever of the vehicle is activated, the gear shift lever of the vehicle is in the neutral position, and the parking brake is not engaged, and not when—the pressure of a pneumatic circuit associated with the parking brake is below a threshold,—the vehicle speed exceeds a threshold.

Abstract: This invention concerns a method of two-way communication between different nodes arranged at different positions in a vehicle, where information in the form of binary symbols is sent on at least two serial communication busses connecting said nodes. The nodes are separated into at least two groups where communication between nodes belonging to one group is more or less critical for driving the vehicle with respect to communication between the nodes in another group; and said different groups of nodes are connected to different communication busses where one end of each bus is connected to a gateway node. The invention also concerns a local area network and a motor vehicle including such an LAN.