Traffic information distribution method, traffic information distribution apparatus and in-vehicle terminal

Abstract

Disclosed is a traffic information distribution apparatusincluding date-time information in traffic information acquired by the traffic information acquire unitor generated by the traffic information prediction unit, and accumulates the traffic information in the traffic information DB. When the traffic information distribution apparatusreceives distribution request information transmitted from the in-vehicle terminal, based on date-time information of reference traffic information held by the in-vehicle terminalincluded in the distribution request information, the traffic information distribution apparatusretrieves traffic information including the same date-time information as the date-time information of the reference traffic information from the traffic information DB. Then, difference traffic information generation unitgenerates difference traffic information between the retrieved traffic information and traffic information to be distributed, and the traffic information distribution apparatusdistributes the generated difference traffic information to the in-vehicle terminal