Automatic vehicle monitoring identification location alarm and voice communications system

摘要: In a computer-controlled bus-monitoring system, each of the buses in system is provided with two-way radio for communication control center on either voice channel or data channel. addition, bus includes second receiver receiving signals from signpost transmitters located along route, information being stored temporary storage unit bus. The computer continually controls interrogation all channel, automatically replying location plus time elapsed since that was Deviations schedule are displayed console at center. may be alerted to reply by special code sent over selective calling particular provided, and provision also made alerting an emergency automatic transmission