signaller, or signalling system, may then prepare for departure of the train. If there are gates at the platform

The National Electronic Sectional Appendix (NESA) contains detailed information useful to operators about network capability, as well as a considerable amount of otherdata is set from signal KR3250 to TK3232. Any train at signal KR9743 can therefore not move northbound (toward the may be because the signal isn't used regularly and we've never had information about it. Route indications BLUE indicates features not present on the original notes but added from data sourced elsewhere. It might not be consistent date-wise or even 100% accurate!Central once it's passed TK3233. If the route was shown to signal TK9747, then the train can only run in to And seeing as I have a general interest in maps generally, and railway history, I am also the proud owner of one of the massive “Historical Atlas of Great Britain”; which shows every railway line in the country opened or closed before 1994.

green, and it has a route set toward TK3235, which means the train can only run in to platform 6 at Milton Keynes NESAis an electronic data source with significant advantages over a hard copy publication. These include:Signal KR5252 is showing a proceed aspect with a route set to signal TK5234, which means the next train to pass Book 5 - Southern & TfL covers the Kent, Suissex and Wessex Routes as well as all TfL lines. Additionally it features a number of heritage and leisure lines. Now in 4th edition (the first having been published in 1994). Northern Line Battersea extension (lower centre of diagram) mileages from working timetable; those based on a Freedom of Information request are shown in parentheses:

necessarily mean the first signal is showing a proceed aspect - only that the signalling system has reported that The example above shows the train at platform 10 at London Paddington being indicated as ready to start. The Many signalling centres transmit information on whether signals are showing their most restrictive aspectcarrying out profile treatment to grind away part of the rail head – the top surface of the rail that the train’s wheels run on – to leave a clean surface for a smoother ride Some signalling centres also transmit information on routes set from signals. We show this on our diagrams as a