• Seven countries: Austria, Czech Republic, France, Germany, Hungary, Romania, Slovak Republic. 
  • Eight Infrastructure Managers and one Allocation Body: CFR, DB Netz, GYSEV, MÀV, ÖBB-Infrastruktur, SNCF Réseau, SŽDC, VPE, ŽSR
  • Corridor length: approx. 6800 km