This Technical Specification defines, for the purpose of ensuring compatibility between rolling stock and
track circuits the limits for conducted interference from rolling stock and the measurement method for
verifying conformity of rolling stock to these limits.
The interference limits are only applicable to interoperable rolling stock which is intended to run on lines
exclusively equipped with preferred track circuit listed in this Technical Specification. National Notified
Technical Rules are still to be used in all cases, where the line over which the rolling stock is intended to run
is equipped with any type of older version or non-preferred track circuits that are not listed in this Technical
Specification. However, the rolling stock test methodology (infrastructure conditions, test configurations,
operational conditions, etc.) presented in this Technical Specification is also applicable to establish
compatibility with non-preferred track circuits.
This Technical Specification gives guidance on the derivation of interference current limits specified for
rolling stock and defines measurement methods and evaluation criteria.
This Technical Specification defines
• a set of interference current limits for RST (Rolling Stock) applicable for each of the following types of
traction system:
- DC (750 V, 1,5 kV and 3 kV);
- 16,7 Hz AC;
- 50 Hz AC.
• methodology for the demonstration of compatibility between rolling stock and track circuits,
• measurement method to verify interference current limits and evaluation criteria.
NOTE 1 The basic parameters of track circuits associated with the interference current limits for RST are not in the scope of this
Technical Specification.
NOTE 2 Any phenomena linked to traction power supply and associated protection (over voltage, short-circuit current, under- and
over-voltage if regenerative brakes are used) is part of the track circuit design and outside the scope of this Technical Specification.