Trafic information providing system, apparatus, method, and in-vehicle information apparatus

摘要

When receiving a traffic information providing request (S200), a traffic information providing apparatus (1) analyzes (S210) which area's traffic information is requested based an the received request information. Traffic information of road links located in the requested area is read (S211) from the traffic information DB, and it is determined (S212) whether the road links' traffic information is similar or not. Similar links configure (S214) a link group, and traffic information corresponding to the link group is created (S215). Traffic information of the configured link group is delivered (S216) to an in-vehicle information apparatus (5).