As part of RSSB’s five-year review of the Rail Industry Standard (RIS) on SSCC (RIS-8046-TOM), we have updated requirements and incorporated key points from the Communications Manual (research project T1078) which describes good practice in SCC on the railways. The changes to the RIS (September 2019) include revisions to SSCC monitoring that align them with the Communications Manual, as well as a new appendix that contains guiding principles for effective SSCC.