"Colin Rosenstiel" wrote in message
l.co.uk...

BR took over the GNC before TPWS was invented. Given what happened at
Moorgate immediately before BR took over there, it is somewhat
unsurprising that the dead end tunnel safety system introduced there,
known as Moorgate control, was retained for BR use.

Agreed.

So the rolling stock does carry tripcocks?

Nowadays they would
presumably be able to rely on standard TPWS and could scrap the tripcocks.
When the 313s on the GN come up for replacement (is there even a date
yet?) presumably they will consider updating the signalling at the Cross.


Sure. Pobably cheaper to use TPWS as it is less energy intensive and doesn't
contain moving parts..

I thought the main use was ECS.

ECS?