Patent ID: 7894981

Claim:
A traffic information providing system for creating statistical traffic information, comprising: storage mage for storing the traffic information including information about a travel time of each of link making up a road on a map, wherein said traffic information being externally acquired by the traffic information acquiring means; link travel time probability calculating means for calculating a probability distribution of travel times of the links for each time zone with use of past traffic information stored by the storage means every time zone in which the statistical traffic information is created; route travel-time probability calculating means for calculating a probability distribution of travel times of a specific route making up a plurality of links with use of the probability distribution calculated by the link travel-time probability calculating means; setting means for setting a travel time range or a travel time probability for the specific route; and reliability calculating means, when the travel time range of the specific route is set by the setting means, for calculating a probability that the travel time of the specific route is in the travel time range set by the setting means with use of the probability distribution of travel times of the specific route and, when the travel time probability of the specific route is set by the setting means, for calculating a travel time range in which the travel time probability set by the setting means with use of the probability distribution of travel times of the specific route.