View onto the section Buir of the upgraded line Cologne-Düren (ABS 4) from the street bridge at it's eastern end on 8 August 2001. The northern highspeed track on the right and the track for the S-Bahn (urban trains) on the left are in use at this time. The southern highspeed track in the middle is not in use by now, so it's surface is a bit rusty. The entrance signals of the new overtaking station Dorsfeld are visible, also some switches behind them.

Digital photo by Christoph Schmitz