Abstract: The system comprises transceivers employing identical modems, one located at a fixed position and connected to the wire and one on a vehicle guided along the wire. The transceiver's specialized modems may be connected to a central host which may be a computer, to a programmable controller, or to a communications bus as required. Additional transceivers may be connected to the communications bus for communication between the central host and additional wires. All central host signals are transmitted to all wire connected modems and sent out on all wires. All signals from vehicle modems are transmitted back to the central host. Each transceiver is adapted to employ one or more identical modem, each connected to a different wire.