Traffic lights, whose signal color discs, which point to the different traffic directions, are illuminated by a common central light source
DE530544C
Switch for traffic regulator arranged in the street
DE511864C
Device for the automatic switching on of traffic signals at road crossings by means of two contact thresholds arranged one behind the other in the road transverse to the direction of travel
DE502147C
Device for switching on traffic signals at road crossings by means of two pressure rails arranged one behind the other on a rocker in the road transverse to the direction of travel
