Method for ascertaining a piece of topological information of an intersection

A system for ascertaining a piece of topological information of an intersection, comprising:

• a locating unit configured to locate a vehicle with lane accuracy when negotiating the intersection;
• an ascertainment unit configured to ascertain data by the vehicle when negotiating the intersection;
• a transmission unit configured to transmit the data to a processing unit, the processing unit being configured to ascertain a connectivity of the lanes of the intersection from the data;
• wherein lane change matrices are created from the data, which indicate from which lane-road combination the vehicle enters another lane-road combination, the lane change matrices being provided to a neural network as input data.

A non-transitory computer-readable data carrier on which is stored a computer program, which is executable by a processor, comprising:

• a program code arrangement having including program code for ascertaining a piece of topological information of an intersection, by performing the following:
• locating a vehicle with lane accuracy when negotiating the intersection;
• ascertaining data by the vehicle when negotiating the intersection;
• transmitting the data to a processing unit;
• and
• ascertaining a connectivity of lane-roadway combinations of the intersection from the data with the processing unit;
• wherein lane change matrices are created from the data, which indicate from which lane-road combination the vehicle enters another lane-road combination, the lane change matrices being provided to a neural network as input data.