1. A method intended for position determination of a motor vehicle, the method comprising the acts of: satellite based determining of a geographical position of the motor vehicle; providing digital road map data, which includes at least information about road segments in a vicinity of the geographical position; and carrying out a first determining act for determining at least a first road segment, on which the motor vehicle is located with high probability, wherein the first determining act is based on a matching of the geographical position with the digital road map data; retrieving traffic lane data, regarding at least a number of traffic lanes for the first road segment, from a road map database; determining a traffic lane, in which the motor vehicle is currently traveling utilizing a vehicle on-board camera; carrying out a second determining act for determining a second road segment, on which the motor vehicle is currently located with high probability, wherein the second determining act is based on a matching of the geographical position with the digital road map data and at least the traffic lane in which the vehicle is traveling, wherein for the purpose of the second determining act, a traffic lane model of the first road segment is created based on the traffic lane data, the determination of the lane, in which the motor vehicle is currently traveling, is carried out based on information of the traffic lane model, the traffic lane model comprises information regarding the number of traffic lanes of the first road-segment, the traffic lane model comprises information regarding exclusion and inclusion of traffic lanes within the first road segment, the output of the first determining act is further used as input for the second determining act, and the traffic lane model includes instructions regarding a user restriction for a specific lane.