Bus transport alighting-boarding radio announcer and/or display - has transceiver in bus and at bus stop for coded signals communications

摘要

Each bus has a coded frequency radio transmitter and receiver. A circuit alternatively triggers the transmitter and receiver. At each bus stop is a selector system and a round diffusion or optical display system. When the vehicle arrives near to a 'stop' the intermittent transmitted coded frequencys are detected. After decoding, they trigger a second circuit at the 'stop' which emits low frequency signals characterising the 'stop'. If these slow frequency signals match preselected frequencys selected in a selector circuit, the 'stops' round or optical system is actuated.