| 摘要 |
PROBLEM TO BE SOLVED: To avoid a danger when a vehicle enters a tunnel because the inside of the tunnel becomes a high temperature, for example, when a fire is caused in the tunnel. SOLUTION: This actuator of an automatic brake device of the vehicle applied to the vehicle 8 traveling on a travel lane 2 provided with a transmitter 4 for transmitting a signal T2 composed of an electromagnetic wave, has in the vehicle 8 the automatic brake device 6 capable of applying a brake to at least one wheel brake 53 or 53' and a receiver 7 for outputting a control signal T3 by receiving the signal T2 composed of the electromagnetic wave, and the automatic brake device 6 of the vehicle 8 is actuated on the basis of the control signal T3 of the receiver 7.
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