https://dserver.bundestag.de/btd/20/102/2010284.pdf https://dserver.bundestag.de/btd/20/102/2010284.pdf has a list of railway infrastructure elements (track swi

https://dserver.bundestag.de/btd/20/102/2010284.pdf https://dserver.bundestag.de/btd/20/102/2010284.pdf has a list of railway infrastructure elements (track switches, bridges, overhead electrical lines, rail tracks, track crossings, signal boxes, support structures) that are, while still safely usable, in the condition categories "einschränkend" (limiting), "schlecht" (bad), and "mangelhaft" (deficient) - that is, the condition categories that require some kind of maintenance and might reduce efficiency of the rail network. Starts on page 9, ends on page 494.