One of the things I really like about the 1920s-era Northern Line stations south of Kennington is the installation of Next Train Indicators in the booking hall, showing the next trains for each direction up to 15 minutes in the future.
Why do other lines with integrated controls (i.e. the Central) eschew such installations? If people could walk into Holborn and see that the next Central Line service to Epping was 5 minutes away it would be very useful, especially for tourists.
The NEXT train indicators are in the booking hall of some locations on other lines. West Acton is one that strangely springs to mind. Also the next train indicators should be introduced as a part of the station refurb program - as seen at West Ruislip & Morden.
If my history is correct, the booking hall DMI's on the south end of the Northern were introduced late 90's as a part of the station refurb program. At this time the line was plauged by crime, so a raft of measures were introduced, including the introduction of station control points, rather than station supervisor offices, seating that was in view of this SCP and indicators in the platform area. This was designed to allow the nervous traveller to sit in the public area of the station and then go onto the platform when their trains arrive.
The Northern Line booking hall DMI's are fed from the Passenger Information Management system that the Northern Line have, and as a result the information can be a little inaccurate. Not a huge problem if you have a 2/3 min wait, but causes a few problems for departures less than a minute at locations such as Balham.
I still think the PTI system that the Northern has is one of the most accuarate systems on the combine. When I worked on those stations, these descriptions/ times could be relied upon 99% of the time. Its only when there are short notice turns and diversions that the systems goes wobbly, but the large number of PTI pick up points on the line used to sort things out fairly quickly. The Train description going northbound was fed from Morden so we always had around 15 minutes warning of any impending train on the Oval group.
Last Edit: Nov 17, 2006 19:01:34 GMT by trainopd78
The next PTI is at Tooting Broadway, so any trains that miss the Morden one are normally picked up at TBY. Trackernet makes life much easier. A train without a PTI code (if that's the right term) is given a 477 code and although doesn't appear on the DMI's, Trackernet does allow staff to 'see' the train. One 'problem' however is that a 477 train blocks the trains behind from appearing on the DMI's.
The Northern Line PIM's is fairly good, the worst problem being that sometimes trains will linger on the DMI for a time after departure and at some locations - Tooting bec springs to mind - is a bit unreliable.
IMHO the Central's CIS is the best @ most accurate. But then they don't have Trackernet yet