RoadifyDan Posted July 29, 2011 Share #1 Posted July 29, 2011 For anyone interested in reading a good, succinct email from the MTA regarding their plans for real-time subway information availability I recommend the below. Most of it the people here will know, but I found it worth posting. They send very good emails via the mtadevelopers google group: SUBWAYS: The ability to share real-time data is dependent on the capabilities of the systems we use to control signals and train movement. On the 1, 2, 3, 4, 5 and 6 lines (collectively, the majority of the "A" Division or I.R.T.), we use a modern, computerized system known as Automatic Train Supervision (ATS), which was activated incrementally between 2005 and 2010 and allows our dispatchers to see precise train positions in real time. This is the system that feeds information into the countdown clocks that we are activating in stations along these lines. We are working through the technical issues that would enable us to provide an API for real-time data from ATS. This information would be similar to what appears in the countdown clocks. Right now, though, our ATS team's top priority is continuing an aggressive schedule to activate countdown clocks by the end of the year in all of the stations on these lines that don't yet have them. On the A, B, C, D, E, F, G, J, M, N, Q, R and Z lines (collectively, the majority of the "B" Division, or IND. and B.M.T. systems), we use a fixed-block signalling system that essentially dates back to the dawn of the subways. While we maintain the system continuously and regularly upgrade its components, the underlying technology has remained little changed since the nineteenth century. It is a fail- safe system that allows our dispatchers to known a train's general position within fixed blocks of track, but it does not allow our dispatchers to see a train's precise position in real time. We have long-term plans in place to upgrade these lines to modern, computerized train control, pending availability of funding in future capital programs. We are currently experimenting with a few ways to bring rudimentary countdown clocks and next-train audio announcements to these lines. As of this writing, 19 stations on the A, C and E lines in Manhattan, 13 stations on the E, F, M and R lines in Queens and one station in Brooklyn benefit one or another form of these less sophisticated countdown clocks. Finally, the L line is controlled by our most sophisticated train dispatching system, Communications-Based Train Control (CBTC). Countdown clocks on the 24 stations of the L line are powered by CBTC. MTA New York City Transit is also installing CBTC on the 7 line. We don't presently have an API for the L line, but this too is under evaluation. Our first priority for sharing real-time data is ATS, which has many more stations. Link to comment Share on other sites More sharing options...
Kriston Lewis Posted July 30, 2011 Share #2 Posted July 30, 2011 There's some stuff concerning real-time train info (for the B Division) in the Capital Plan. Link to comment Share on other sites More sharing options...
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