>>1170278These pics are from Wuppertel, freight service was running till 1980. It's a complicated story, most of the track was originally concieved as a regular Kleinbahn/shortline, then electrified to use for a tram line, and then some electric freight locos were purchased that also ran on the regular tram network. For infos in German:
http://www.bahnen-wuppertal.de/html/gueterverkehr.html