Public transport information system advising the users of the estimated waiting times at the stops within the network

摘要

The system has an electronic information point (10) at each bus stop (3), to inform intending passengers of the waiting time before the arrival of the next bus. The system uses a locator (4) to determine the position of each bus (2) every 20-40 seconds and transmit the data to a central information post, where it is processed to give a delay time and fed via a transmitter (6) to the bus stop display units. Each display unit has an aerial and a receiver, a decoding circuit, a memory, microprocessor and display screen. It also has keys or other means of interrogation, a battery for its power supply and a loudspeaker for sound signals.