07-04-2009, 01:30 PM
[As with many questions there proabbly is no perfect answer. hwoever to gain familairity with the area I suggest you read the CENELEC reprot referred to plus the IRSE Technical Reprot on Cross Acceptance which will explain the process to you. You then need to use your skill and judgement and put yourslef into the position of a railway administration and supplier and see it from their point of view. This can;t be taught it has to be experienced or developed.

