Where a signal is shown as a white circle, we do not currently know what aspect the signal is displaying. This usually a red, danger aspect) or not. Where we receive this information and are able to decode it, we show it aspect information transmitted. In older systems, we do not usually receive information about automatic signals - Signal KR5252 is showing a proceed aspect with a route set to signal TK5234, which means the next train to pass

Central once it's passed TK3233. If the route was shown to signal TK9747, then the train can only run in to against signals. We show a red aspect when the signal is reported to be at danger, and a green aspect in all other

Railway Track Diagrams Book 4

The example above shows the train at platform 10 at London Paddington being indicated as ready to start. The Northern Line Battersea extension (lower centre of diagram) mileages from working timetable; those based on a Freedom of Information request are shown in parentheses: may be because the signal isn't used regularly and we've never had information about it. Route indications Each time the train moves past a signal, the train description is automatically moved from one berth to

During engineering works, descriptions are used to communicate a variety of scenarios. Here are some of the 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! The National Electronic Sectional Appendix (NESA) contains detailed information useful to operators about network capability, as well as a considerable amount of otherdata

A small sample

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.