> For a short summary, the basic problem is that rail infrastructure is paid for by national funds EU co-founded projects can be forced to operate only domesti

> For a short summary, the basic problem is that rail infrastructure is paid for by national funds EU co-founded projects can be forced to operate only domestically too. For example polish high speed railways: https://en.wikipedia.org/wiki/Pendolino#Poland https://en.wikipedia.org/wiki/Pendolino#Poland > certification for international operation is not seen as a priority, as the trains are restricted to domestic services for an initial 10 years under the terms of a grant from the EU Cohesion Fund which covered 22% of the project cost.[31]