DIN 1451 fette Breitschrift 1936 is likely the closest digital version, not sure if the numbers are extended enough.
"Din", which is an acronym for the German "Deutsches Institut für Normung" (German Institute for Standardization) approved the typeface for use in road signs etc in Germany.
http://www.ffonts.net/DIN-1451-fette-Breitschrift-1936.fonthttp://www.fontspace.com/peter-wiegel/din-...eitschrift-1936The 4 is closed there, but open in the font/ digital version. The font, though, the 7has a hook and it's a little crude being a free font. It's very similar to the transportation signage-inspired (and better looking digital version) "Interstate" but the 4 in that is closed. I think Adobe makes better looking versions of din, Mittleshrift and din Eingshrift but those are regular and condensed. Anyway, very close to din.
http://de.wikipedia.org/wiki/DIN_1451