Mission: Clean glass roof

Deutsche Bahn is making a second attempt to clean the heavily soiled Das of the long-distance and S-Bahn station in Spandau with the help of a robot. New attempt: In a few days, Deutsche Bahn plans to try again to clean the heavily soiled glass roof of Spandau station with robotic assistance. A first attempt last summer did not work when it was demonstrated.

but then it didn't work. The approval process for the system was more difficult than expected, said a railroad spokesman. Since it was a prototype without a comparative plant that could have been used, all the processes for new approvals had to be gone through. And that can take time at the railroad. The interaction of newly installed technology on a roof that was not designed for this purpose was a special challenge, the spokesman explained, explaining the long procedure.