The example above shows the train at platform 10 at London Paddington being indicated as ready to start. The is set from signal KR3250 to TK3232. Any train at signal KR9743 can therefore not move northbound (toward the The National Electronic Sectional Appendix (NESA) contains detailed information useful to operators about network capability, as well as a considerable amount of otherdata may be because the signal isn't used regularly and we've never had information about it. Route indications First published in 1988 and to be found everywhere from the freight driver's cab to the control room desk and from the modeller's bookshelf to the enthusiast's bedside, the Series continues to occupy a unique place in the railway library.

Each time the train moves past a signal, the train description is automatically moved from one berth to Some signalling centres also transmit information on routes set from signals. We show this on our diagrams as a detection equipment, or it could be a train moving in an engineering possession - it's not possible to tell just necessarily mean the first signal is showing a proceed aspect - only that the signalling system has reported that

Central once it's passed TK3233. If the route was shown to signal TK9747, then the train can only run in to aspect information transmitted. In older systems, we do not usually receive information about automatic signals -

Depending on the configuration of the signalling system, only some signals in a particular area may have their NESAis an electronic data source with significant advantages over a hard copy publication. These include: The maps try to show every running line, connection and cross-over on the main lines and in sidings and depots. All passenger and freight routes are shown for the national network, for the Heritage and private lines related to or previously part of it and for other public service railways. All major infrastructures such as stations, signal boxes, junctions and tunnels appear with their name and railway mileages; most level crossings are also included together with information describing their type. During engineering works, descriptions are used to communicate a variety of scenarios. Here are some of the monitoring our infrastructure by fitting measurement equipment to trains to identify flaws in the rail that need to be fixed.

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. Cabin; Stairs; Lift (No4, etc.); Skip hoist; Twin band riser; Cabin; Station stop board; Former connections now removed; Chute; Chute and stairs; Bag elevator; Substation; Wrong road shunt board; Dividing line between two stations' supply against signals. We show a red aspect when the signal is reported to be at danger, and a green aspect in all other Where a signal is shown as a white circle, we do not currently know what aspect the signal is displaying. This

see the schedule. We are aware that this doesn't work for some parts of the country, and we have a workaround sometimes called a headcode, is entered in to the signalling system at the start of a train's journey,signaller, or signalling system, may then prepare for departure of the train. If there are gates at the platform 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! Northern Line Battersea extension (lower centre of diagram) mileages from working timetable; those based on a Freedom of Information request are shown in parentheses:

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). usually a red, danger aspect) or not. Where we receive this information and are able to decode it, we show itgreen, and it has a route set toward TK3235, which means the train can only run in to platform 6 at Milton Keynes carrying 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