GKRT0057 Iss 2

This document sets out requirements and guidance for the management of risk associated with trains exceeding the end of their movement authority.

The structure of the document has been revised to accommodate supporting rationale and guidance from GKGN0657 issue one which is now withdrawn.

Amendment AM001 from GKRT0057 issue one has been incorporated into this issue to amend the chromaticity limit for colour light signals. Updates to standards cross references in line with current status of the standards catalogue. Update to standard format to match current style guidelines. 

Optional reading and resources:

Standards quarterly webinar - June 2024

Where do we use standards? - Control, Command and Signalling