Paul Corfield wrote:
As you say the most important thing is to keep pushing trains down the
line at frequent intervals with as few perturbations to the service as
possible. The simple fact is that most lines have very old signalling
and control systems that are a very long away from the best modern
systems. There are additional aids and information sources that have
been "added on" to help with train dispatch and changeovers but it's not
state of the art nor is it fully integrated to allow line controllers /
duty managers to effect the most sensible solutions very quickly.

Once upon a time there were things called 'headway clocks', showing
the driver the time since the train in front departed. These are a
simple, low-tech way to keep the service intervals even, and I can't
understand why they were abolished.

Colin McKenzie


--
No-one has ever proved that cycle helmets make cycling any safer at
the population level, and anyway cycling is about as safe per mile as
walking.
Make an informed choice - visit www.cyclehelmets.org.