| 摘要 |
PURPOSE:To increase number of idle vehicles at a district at busy state and to decrease number of idle vehicles at a non-busy state by using a remote control signal from a base station so as to control a signal output of a vehicle number or the like sent from a mobile station. CONSTITUTION:In a base station radio system 4, a remote control signal to switch a transmission output of a signal transmitter 2-0 such as a vehicle number is sent from a generator 4-1 to a mobile station as required. In a mobile station vehicle, a receiver 3-0 of a radio system 3 receives a control signal, a processing unit 3-1 decides the signal and sends it to a transmission output controller 2-1. The controller 2-1 controls the transmitter 201 to switch the transmission output is response to the obtained control signal. Thus, the output of the transmitter 2-0 is changed and even when the sensitivity of the receiver of adistrict is constant, the arrival effective range of a radio wave is changed in the vehicle. |
