CENTRAL APPARATUS, DRIVING SUPPORT SYSTEM, AND DRIVING SUPPORT METHOD

A central apparatus 101 that communicates with an information terminal 102 mounted in a vehicle that travels by employing stored energy, includes: a reception unit 104 that receives position information for the information terminal 102 or for the vehicle, and a search condition inputted to the information terminal 102; a potential driving distance calculation unit 105 that calculates an energy consumption amount for each of various road links based upon the position information and the search condition, and calculates a potential driving distance based upon the energy consumption amounts that have been calculated; and a transmission unit 106 that transmits to the information terminal information relating to the potential driving distance that has been calculated for display upon the information terminal.