The invention relates to a driver assistance system (10) for a vehicle (20). The driver assistance system (10) comprises a control unit (11) and a communication device (12) for receiving data from a server (30). The control unit (11) is designed to calculate a trajectory (T) for the vehicle (20) on the basis of the sensor data. The control unit (11) is also designed to replace the trajectory (T) for the vehicle (20) with an offboard trajectory (T1) received by the server (30).
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