1. A method for assisting a driver of a vehicle in a bottleneck, the method comprising: reading in, via an interface, a piece of information, from a surroundings detection/monitoring device of the vehicle, about a negotiable corridor in the bottleneck, an instantaneous trajectory, from the surroundings detection/monitoring device or a navigation system of vehicle, of the vehicle in the bottleneck, and a steering torque which is presently applied by the driver to a steering of the vehicle; evaluating, via a processor device of an assisting control system, the piece of information about the corridor, the trajectory, and the steering torque by using known dimensions of the vehicle to recognize an anticipated violation of the corridor by at least one part of the vehicle; and providing, via the processor device of the assisting control system, a control signal for a counter torque which acts against the steering torque when the violation is recognized to assist the driver with avoiding the violation.