Lighting installation for motorway tunnels.

摘要

The lighting installation - for the background illumination of motorway tunnels for the perception of both the tunnel track and the possible presence of obstacles along the roadway - comprises at least a row of luminous spots (31) substantially close to each other along one or both sides of the tunnel, said spots defining the track of the said tunnel, while the interruption of the spots of one row indicates in reverse mode the presence of an obstacle causing such interruption. The luminous spots are fed mostly with laser light.