L37.7 (Thionville-Apach Frontière), seen very close to the French-German border.
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At this stage, the line still runs in France, but side-signs are unambiguous about the border nearby:
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• Top: DB signs, warning against the forthcoming voltage change-over (25kV 50Hz AC---> 15kV 16 2/3 Hz AC);
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• Bottom: SNCF sign "Signalisation DB", warning against the immediate rule-book/signalling change-over (SNCF/RFF---> DB Netz).
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Apach [Apach Frontière]. 
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25th May 2006. 
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P.L.Guillemin (plguillemin@yahoo.fr)