| 摘要 |
<p>The present invention relates to an apparatus for announcing emergency state on roads and highways, said apparatus comprising mobile vehicle units (V1, V2, V3) and a stationary unit (S) of a safety transport control point wherein these units contain radio signal receivers (3) and radio signal transmitters (2) that are controlled by mechanical switches. Said radio signal transmitter (2) inputs are provided with emergency detectors (22) and the radio signal transmitter (2) outputs are connected to at least one signal transmitting unit (21). Each radio signal receiver (3) is provided with at least one signal receiving unit (31).</p> |
