This International Standard describes a procedure for mutual acceptance of rolling stock to
run over specific routes．It describes the methods of measurement of interference currents，
the methods of measurement of the susceptibility of train detection systems，the
characterisation of traction power supplies and the procedure for acceptance．The result of
the acceptance procedure is a structured justification document referred to as a“compatibility
case”，which documents the evidence that the conditions for compatibility have been satisfied
The procedure is also applied to modifications of rolling stock，traction power supply or train
detection systems which are considered to affect compatibility．
The scope of the compatibility case is restricted to the demonstration of compatibility of rolling
stock with a train detection system’s characterisation(e．g．gabarit)．Train detection system in
this standard refers only to a track circuit or those using wheel detector．