Electropneumatic parking brake device for a tractor vehicle of a tractor vehicle-trailer combination, having a parking braking signal transmitter which generates electrical signals corresponding at least to a driving function and to a parking braking function, at least one electronic control unit which, in a manner dependent on the electrical signals, actuates at least one electromagnetic valve of a valve unit, which valve unit, at one side, is connected by way of a supply port to a compressed-air supply and, at the other side, at its outlet ports (10, 12), outputs pneumatic signals corresponding at least to the driving function and to the parking braking function in a manner dependent on said actuation, of which a first outlet port is connected by way of a pneumatic connection to a pneumatic control port of a trailer control module or trailer control valve, of which an outlet port is connected to a "brake" coupling head, and of which a second outlet port is connected to spring brake cylinders of the tractor vehicle, wherein a separate electromagnetic valve device is arranged in the pneumatic connection between the first outlet port of the valve unit and the pneumatic control port of the trailer control module or trailer control valve, wherein, to realize an anti-jackknife braking function for applying the brakes of the trailer independently of the tractor vehicle in response to electrical anti-jackknife braking signals which are generated by the parking braking signal transmitter or by a further signal transmitter and which correspond to the anti-jackknife braking function, a) at least one electromagnetic valve of the valve unit is actuated by the control unit such that the first outlet port is connected to the supply port and the second outlet port is deaerated, b) the electromagnetic valve device is designed, and actuated by the control unit or by a further control unit, such that it outputs a control pressure, which is metered in a manner dependent on the anti-jackknife braking signals, to the pneumatic control port of the trailer control module or of the trailer control valve, characterized in that c) the electromagnetic valve device comprises at least one electromagnetic switching valve (50b, 52b), and d) the electromagnetic valve device is formed by two 2/2 directional solenoid valves (50b, 52b), wherein e) the electromagnetic valve device is formed by an ABS pressure control valve. a) at least one electromagnetic valve of the valve unit is actuated by the control unit such that the first outlet port is connected to the supply port and the second outlet port is deaerated, b) the electromagnetic valve device is designed, and actuated by the control unit or by a further control unit, such that it outputs a control pressure, which is metered in a manner dependent on the anti-jackknife braking signals, to the pneumatic control port of the trailer control module or of the trailer control valve, characterized in that c) the electromagnetic valve device comprises at least one electromagnetic switching valve (50b, 52b), and d) the electromagnetic valve device is formed by two 2/2 directional solenoid valves (50b, 52b), wherein e) the electromagnetic valve device is formed by an ABS pressure control valve.