On Nov 19, 12:48*am, EE507 wrote:
On Nov 18, 4:39*pm, Tony Miles wrote:









On Nov 18, 2:42*pm, Mwmbwls wrote:

http://www.thisislondon.co.uk/standa...-drivers-rules....

Even allowing for the sensationalist "anything to sell(or rather give
away) papers" oversimplification approach of the Evening Standard,can
this/should this be done?

Hmmm.. one interesting part of the Standard's report is:
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"Reliability of the Jubilee line, the principal route linking central
London to the Olympic Stadium in Stratford, is causing most concern.

It is used by more than 600,000 passengers a day and has been blighted
by problems affecting its new signalling system. Last week tens of
thousands of passengers suffered delays after the computers
controlling the trains crashed.

Ms Dedring, 40, admitted that the Jubilee line could "still be a lot
better" as she spoke about the "healthy tension" between City Hall and
TfL.

She revealed the Mayor personally called bosses at Thales, the firm
operating the Jubilee line's signalling system, to rebuke them for
their performance."
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So which company has so far been unable to resolve problems with the
new signalling on Manchester's Metrolink system?

Why does a tram system need complicated signalling?

It needs to stop one tram crossing a junction if another is about to
cross it, to enure trams aren't running in opposite directions over a
piece of single track at the same time (both happened at the Media
City branch when the new signalling was switched on there...) and also
to ensure trams are directed onto the right branch at a junction. It
then needs to know which tram is which so that the real time displays
on platforms can tell passengers where the next tram(s) are going and
how long it will be til they arrive. Currently the Thales system in
Manchester is unable to do much of this basic stuff...

Tony