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At present, in the field of intelligent transport systems (ITSs), research on in-vehicle communications (VCs), intervehicle communications (IVCs), road-to-vehicle communications (RVCs), etc. continues. All information communication technology, especially radio communications technology, was applied. In this paper, in order to minimize the costs of equipment and simplify the design, equipment, structure of VC, IVC, and RVC for traffic jam area, the authors proposed to utilize a wireless Bluetooth technology system. The whole proposed system is connected to the Internet backbone, and provided some access point (AP) areas, the Internet can be accessed from inside the vehicle, and information, such as news and weather information, can be downloaded. It is also possible to know traffic information for each AP area by accessing a data center server.