Method for locating road shapes using erroneous map data

A system for identifying a location of a road segment in digital maps, each map containing errors inherent in the reduced-scaling of the digital maps and/or depending on the kind of the digital maps, the digital maps including a first digital map and a second digital map, the second digital map showing the road segment at a different location from the first digital map due to the errors, the system comprising:

• the transmitting apparatus that has the first digital map and transmits the location information which indicates the road segment on the first digital map to the receiving apparatus;
• wherein the location information including:
• coordinates information which indicates a list of coordinates of points on the road segment, attribute information about the points or the road segment, and relative information which indicates a location where a traffic event occurred on the road segment, and
• the receiving apparatus that has the second digital map wherein after the receiving apparatus receives the location information from the transmitting apparatus, the receiving apparatus identifies the location of the road segment on the second digital map by using the coordinates information and the attribute information included in the location information and identifies the location of the traffic event on the road segment on the second digital map by using the relative information included in the location information.