| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a safety system for a road capable of providing risk warning to workers by extremely easily audible signals, visible signals, or sensible signals by discriminating a vehicle which advances near a disaster site to prevent a secondary disaster to site workers caused by the vehicle which advances into the disaster site, having excellent working efficiency since the installation and removal thereof are extremely easy, manufacturable at low cost by a simple configuration, and capable of withstanding repeated use. <P>SOLUTION: This safety system having a tread pressure part which causes a variation in air pressure when a traveling vehicle treads thereon and a pressure sensor capable of sensing the variation in air pressure and capable of transmitting an external output signal on the basis of the discrimination of the pressure sensor is installed at the rear of the disaster site. Also, a warning device for road having a warning sound generating device for emitting warning sound by receiving the external output signal is installed near workers. Consequently, warning and caution can be quickly provided to the workers at the disaster site. <P>COPYRIGHT: (C)2010,JPO&INPIT |
