In message . com, Paul
Weaver writes
On Monday morning, an entertaining driver on the central line informed
us that this was "the 09:18 from Woodford, calling all stations to
West Ruislip, due to Stratford at 09:xx, Liverpool street at 09:yy,
and Holborn at 09:zz"

While this is guessable (Epping to White City takes bang on an hour on
most trips), I am dimly ware that there are working timetables for
tube lines. How often to trains run to these times, and is it possible
to get a copy of these? With a 10-15 minute wait at the extremeties,
even at 9AM, it would be nice to see when trains are due. Some lines
have a live ETA, but the central line doesn't. The WAP service at
http://wap.tfl.gov.uk/tfldepboard/ tends to break down whenever I try
and use it in anger

When I worked down there, both Central and Northern were timetabled to
the half minute and on the Northern if you were more than seven minutes
late you were turned early to keep in sequence for the programme machine
on Kennington platform.
--
Clive.