This file is from Wikimedia Commons and may be used by other projects.
The description on its file description page there is shown below.
Summary
DescriptionETCS-Kaskade Schaffhausen.jpg
Deutsch: Um eine ZUB 121-Linienschleife für kontinuierliche Signalübertragung durch ETCS zu ersetzen, ist eine Kaskade von Balisen notwendig. Bahnhof Schaffhausen, Gleis 2 Seite Herblingen
The person who associated a work with this deed has dedicated the work to the public domain by waiving all of their rights to the work worldwide under copyright law, including all related and neighbouring rights, to the extent allowed by law. You can copy, modify, distribute and perform the work, even for commercial purposes, all without asking permission.
http://creativecommons.org/publicdomain/zero/1.0/deed.enCC0Creative Commons Zero, Public Domain Dedicationfalsefalse
Captions
Add a one-line explanation of what this file represents