| 摘要 |
Equipment in sections of road which are to be travelled in only one direction, especially exits from motorways and the like, in which equipment induction loops for detecting the direction of travel of a vehicle are let into the roadway and are connected to optical equipment, the optical equipment emitting sharply focused light beams which are directed towards a vehicle travelling in the wrong direction and whose intensity is sufficient to dazzle the driver. <IMAGE> |
