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Old September 12th 10, 09:21 AM posted to uk.transport.london
[email protected] rosenstiel@cix.compulink.co.uk is offline
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Default Tube Trains Sent On Collision Course

In article , ] (Steve
Fitzgerald) wrote:

In message ,
writes

I tentatively think this focus on the lack of signals is a bit
misleading. Ultimately, all safety on non-ATO lines depends on
drivers correctly responding to signals (barring tripcocks - am i
right i thinking these are only present at a fraction of signals?).
If we accept that stopping at a red is an acceptable part of the
safety mechanism, why can't we also accept that stopping at the
absence of a green, or the absence of any signal, is?


Tripcocks are present at all home signals on LUL lines.


You meant to say:

Tripcocks are present at all stop signals on LUL lines.

Didn't you?


Yes. I wondered whether I'd got it wrong when I wrote it. I meant to
exclude distant signals.

--
Colin Rosenstiel