in the case states which do not yet have national protection systems is it still worth while to invest of the ongoing introduction of earths the major investment involved in a
In the case of Member States which do not yet have national train protection systems, is it still worthwhile to invest in them, in view of the ongoing introduction of ERTMS and the major investment involved in a changeover?
In the case States which do not yet have national protection systems, is it still worthwhile to invest of the ongoing introduction of ERTMS the major investment involved in a