A procedure for determining the probability of finding a parking place within a certain period of time on a pre-set stretch of road of an area with a multiplicity of stretches of road. With this procedure, motion profiles are detected and statistically evaluated of users of radiolocation-aided, especially satellite-aided, navigation aids in the area. For each user a) A “parking place found” event is determined; b) The stretch of road in which the “parking place found” event occurred is detected; c) The travel time is detected which the user expended in each of the stretches of the road until the “parking place found” event occurred. From the data thus acquired for a multiplicity of users, a probability is determined of finding a parking place within the set time span on the stretch of the road.