Method for operating a lane-keeping assistance system

1. A method for operating a lane-keeping assistance system of a vehicle, the method comprising:

detecting, using a sensor system, at least two lane markings in a traffic space situated ahead of the vehicle;

recognizing, using a processor, a separation of a primary lane into a first secondary lane and a second secondary lane based on the at least two detected lane markings;

selecting, using the processor, one of the first and second secondary lanes, wherein the selecting includes detecting and analyzing a signal representing an instantaneous driver intention;

calculating, using the processor, a target trajectory of the selected secondary lane; and

activating, using the processor, a steering device of the vehicle for guiding the vehicle along the calculated target trajectory of the selected secondary lane.

2. The method of claim 1 , wherein the detection of the signal representing the instantaneous driver intention takes place based on an input of a driver.

3. The method of claim 1 , wherein the signal representing the instantaneous driver intention includes a first value and a second value assignable to at least two sub-areas.

4. The method of claim 3 , wherein the analysis includes comparing the first value to a threshold value.

5. The method of claim 4 , wherein the selection is performed based on the second value of the signal in response to a result of the comparison being that the first value exceeds the threshold value.

6. The method of claim 4 , wherein the selection is performed based on a predefined criterion in response to a result of the comparison being that the first value does not exceed the threshold value.

7. The method of claim 6 , wherein the predefined criterion is at least one of a category and a curvature of the at least two detected lane markings.

8. The method of claim 1 , wherein the recognizing includes:

calculating an instantaneous lane width based on the at least two detected lane markings; and

comparing the calculated instantaneous lane width with a predefined lane width.

9. The method of claim 8 , wherein the predefined lane width is at least one of stored in a memory unit of the lane-keeping assistance system and calculated based on the at least two detected lane markings.

10. A lane-keeping assistance system of a vehicle, the system comprising:

a sensor system configured for detecting at least two lane marking in a traffic space situated ahead of the vehicle; and

a processor, wherein the processor is configured to:

recognize a separation of a primary lane into a first secondary lane and a second secondary lane based on the at least two lane markings detected by the sensor system;

select one of the first and second secondary lanes, wherein the selecting includes detecting and analyzing a signal representing an instantaneous driver intention;

calculate a target trajectory of the selected secondary lane; and

activate a steering device of the vehicle for guiding the vehicle along

the calculated target trajectory of the selected secondary lane.

11. A non-transitory computer-readable medium on which are stored instructions that are executable by a processor and that, when executed by the processor, cause the processor to perform a method for operating a lane-keeping assistance system of a vehicle, the method comprising:

detecting, using a sensor system, at least two lane markings in a traffic space situated ahead of the vehicle;

recognizing a separation of a primary lane into a first secondary lane and a second secondary lane based on the at least two detected lane markings;

selecting one of the first and second secondary lanes, wherein the selecting includes detecting and analyzing a signal representing an instantaneous driver intention;

calculating a target trajectory of the selected secondary lane; and

activating a steering device of the vehicle for guiding the vehicle along the calculated target trajectory of the selected secondary lane.