| 摘要 |
<p>The proposed method of optical signalling involves the transmission (65) to vehicles situated behind the signalling vehicle of one or more modulation-coded beams, the coding (76) corresponding uniquely to the functions of the optical signals when switched on. In addition, in certain types of vehicle, vehicles situated in front of the signalling vehicle at a distance not greater than a predetermined distance are detected (61); if vehicles are present, the one or more coded beams from them are received (63) by sensors and decoded (63) and the appropriate warning rear optical signals are then activated (75) and coded (76) in accordance with the functions associated with alterations in the movement of vehicles in front. The method can be implemented using a device comprising a coding unit (14) connected to a complementary emitter (8) fitted in the rear part of the vehicle, and to rear optical warning signals (20, 22, 23). In addition, the device can be provided with a decoder (29) connected to an optical or non-optical receiver unit (27) and to the rear optical warning signals (20, 22).</p> |
