The present invention provides a method for detecting the current location of a bus at lower cost without using a wideband wireless communication device and displaying it on each bus stop. A center system of a center and each of bus stop systems are coupled to each other via Internet. A roadside wireless unit of the bus stop system contained in the bus stop periodically outputs a beacon containing a bus stop ID to a route bus system equipped on a route bus. The route bus system outputs an ID notification signal including a bus stop ID and a bus ID to the bus stop system. The center system of the center updates location information using the bus stop ID and the bus ID and transmits bus location update data to a suitable target. The bus stop system displays a bus location thereon using the transmitted bus location update data.
展开▼