1. A method for identifying at least one of free spaces in which parking is not permitted and parking areas in which parking is permitted, in which vehicles transmit pieces of information about possible parking spaces to a central computer facility, the method comprising: detecting positions of possible parking spaces along a street with the aid of data from surroundings sensors of the vehicles; evaluating the detected possible parking spaces based on the data collected by the surroundings sensors, wherein a categorization of at least one object delimiting the detected possible parking spaces is carried out; recording the possible parking spaces, together with the positions, in a database of the central computer facility; and evaluating the data stored in the database using a cluster analysis, wherein possible parking spaces are assigned to a street portion when the cluster analysis is carried out, a function being assigned to the street portion which is given by the quotient of the frequency of the detections of a possible parking space in a certain position along the street portion and the number of passages of vehicles through this street portion and a weighting factor, formed from the evaluating, wherein at least one of: a presence of a free space in which parking is not permitted is inferred when the function value is greater than a predefined limiting value, or a presence of a parking area in which parking is permitted is inferred when the function value is within a predefined range.