Diesel locos 6.304.1 (left), 6.305.1 (middle) and 6.306.1 (right) are parked at Düren on 9 April 2003. Their liveries differ in some points. 6.305.1 has an additional inscription of the track working company Kölngleis, for which it often moves work trains. 6.306.1, the newest loco, is labeled "Rurtalbahn" instead of "DKB" due to a reorganisation of the company.

Digital photo by Christoph Schmitz