my opinion must be insured that the national authorities issue their safety certificates and authorizations in accordance with what is down by the european railway era
In my opinion, it must be ensured that the national safety authorities issue their safety certificates and authorisations in accordance with what is laid down by the European Railway Agency (ERA).
my opinion, must be ensured that the national authorities issue their safety certificates and authorisations in accordance with what is down by the European Railway (ERA).