Patent ID: 8473135

Claim:
An information and telecommunications system comprising: a vehicular device including a vehicle-side communication unit, a vehicle-side storage unit configured to associate an already-traveled route with a power consumption when a self vehicle has traveled the already-traveled route and store the associated already-traveled route and the power consumption, as traveling history data, and a vehicle-side control unit configured to transmit the traveling history data; and a center device including a center-side communication unit configured to implement communications with the vehicle-side communication unit, a center-side storage unit configured to store the traveling history data transmitted from a plurality of vehicles each equipped with the vehicular device, a center-side first determination unit configured to determine whether a first route, which is not overlapping with the already-traveled route of the self vehicle, is included in a guide route, which is to be traveled by the self vehicle, a center-side second determination unit configured to determine, when the center-side first determination unit determines that the first route is included in the guide route, whether traveling history data of an other vehicle including the first route is stored in the center-side storage unit, a center-side search unit configured to search, when the center-side second determination unit determines that the traveling history data of an other vehicle including the first route is stored in the center-side storage unit, the traveling history data including the first route from the traveling history data of the other vehicle, and a center-side control unit configured to calculate, when the center-side second determination unit determines that the traveling history data of the other vehicle including the first route is stored in the center-side storage unit, a necessary electric power quantity for traveling the first route based on the traveling history data of the other vehicle including the first route searched by the center-side search unit, and calculate, when the center-side first determination unit determines that the first route is not included in the guide route, a necessary electric power quantity for traveling based on an electric power consumption of the self vehicle.