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Keywords from Image Description:
NS lichtseinstelsel wit wit groen. en Threehead searchlightstyle railway signal of the railway signalling system of the Dutch railways Whitewhitegreen proceed at low speed nl Driehoogtesein van het lichtseinstelsel van de Nederlandse Spoorwegen Witwitgroen lage snelheid own Pbech cczero Uploaded with Diagrams of railway signals