Historically, there was no separation between the Puster Valley Railway and the Drava Valley Railway, as the granting of the concession, the construction and the commissioning of the line from Villach to Franzensfeste covered the whole line. However, since the transition between the Italian and Austrian electrification systems is now located in Innichen station, this is usually considered the terminus of the two lines. Alternatively, the national border east of Innichen or the Toblach saddle west of Innichen may be seen as the border between the two lines.
^Ordine di Servizio (in Italian) (85). Ferrovie dello Stato. 1962.{{cite journal}}: CS1 maint: untitled periodical (link)
^"Impianti FS". I Treni (in Italian) (311): 8, 10. January 2009.
^"Impianti FS". I Treni (in Italian). XXXIV (364): 8. November 2013.