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    • 4. 发明授权
    • Vehicle identification and position signalling system in a public
transportation system
    • 公共交通系统车辆识别和位置信号系统
    • US4350969A
    • 1982-09-21
    • US135470
    • 1980-03-31
    • William H. Greer
    • William H. Greer
    • G08G1/123G08G1/12G08C21/00
    • G08G1/123
    • Each vehicle of a transportation system is provided with a radio transmitter providing electable and different sequences of signals, one part of the signal identifying the vehicle, and another changing sequence of signals, either under operator control or automatically by attachment to the odometer, to indicate the present position of the vehicle on a scheduled route. The home of a passenger desirous of meeting a particular vehicle at a particular pickup point is provided with a radio receiver with selectable detectors which can be set to detect the signals from a particular vehicle transmitter, and provide a visual or audible indication of the present position of the vehicle on the scheduled route. Pre-specified settings of the receiver, and corresponding detectable signals, inform a passenger of no service or delayed service.
    • 交通系统的每个车辆设置有无线电发射机,其提供可选择和不同的信号序列,识别车辆的信号的一部分以及在操作者控制下或通过附接到里程计自动地指示的另一变化的信号序列来指示 车辆在预定路线上的当前位置。 在特定拾取点处希望与特定车辆相遇的乘客的家庭设置有无线电接收机,其具有可选择的检测器,其可被设置为检测来自特定车辆发射机的信号,并且提供当前位置的视觉或听觉指示 的车辆在预定路线上。 接收机的预先指定的设置和相应的可检测信号,通知乘客不服务或延迟服务。