Procedure for determining the probability of finding a parking place

1. A procedure for determining the probability of finding a parking place within a certain period of time on a pre-set stretch of a road of an area with a multiplicity of stretches of road, wherein motion profiles are detected and statistically evaluated of users of radiolocation-aided, especially satellite-aided, navigation aids in the area, wherein for each user:

a) a “parking place found” event is determined;

b) a stretch of the road in which the “parking place found” event occurred is detected;

c) a travel time is detected which elapsed for the user in each of the multiplicity of stretches of the road until the “parking place found” event occurred, and wherein data is acquired from steps a) through c) for a multiplicity of users; and, from the data thus acquired, a probability is determined of finding a parking place within the set period of time on the stretch of the road; and wherein the motion profile of the user in the area according to the above-named criteria is only evaluated if the user is recognized as being in search of a parking place, wherein the user is recognized as being in search of a parking place if he is in motion in the area for longer than a preset minimum time at a speed that is less than a minimum speed and/or if he passes by the stretch of the road at least a second time.

2. The procedure according to claim 1 , wherein in step a) stopped motion for a time that exceeds a set tolerance time and/or a removal of the navigation aid from the pre-set stretch of the road is assessed as being the “parking place found” event.

3. The procedure according to claim 1 , wherein for each user, a day of the week and/or time of day is detected on which or at which the “parking place found” event occurred.

4. The procedure according to claim 1 , further comprising:

digitally storing and displaying mapping data on the navigation device;

dividing the acquired probability data into at least two probability groups for each stretch of the road; and

depicting the at least two probability groups on the navigation device.

5. The procedure according to claim 4 , further comprising:

forming three probability groups from the acquired probability data; wherein a first probability group is comprised of high-probability values; a second probability group is comprised of average-probability values; and a third probability group is comprised of low-probability values;

depicting stretches of the road on the navigation device with a green designation for a probability from the first probability group;

depicting stretches of the road on the navigation device with a yellow designation for a probability from the second probability group; and

depicting stretches of the road on the navigation device with a red designation for a probability from the third probability group.

6. The procedure according to claim 4 , further comprising:

displaying no-parking areas on the navigation device.

7. The procedure according to claim 4 , further comprising determining a day of the week for each probability and displaying the respective probability in dependency of the actual day of the week.