The station of Horrem on the upgraded line Cologne-Düren (ABS 4) seen looking towards east on 10 September 2002. The tracks 1 and 2 for the S-Bahn (urban trains) are under construction in the platform area. Very interesting is the signal ZS3 on the left. It announces the signal P3 far in the background, marked with a red circle in the picture. As P3 shows Hp0 (stop), ZS3 shows Ks2 (expect stop) together with a white light which informs about the reduced distance. The "4" says that there is a speed restriction of 40 km/h. When P3 turns green, this will change to an "8" for 80 km/h, the same speed restriction that will be given at P3 then.

Digital photo by Christoph Schmitz