Signalling upgrade comes online on Great Northern line into Moorgate

A new signalling system has been commissioned over the bank holiday, promising Great Northern rail passengers at 30 stations much more reliable journeys on the route to Moorgate in the City of London. The new equipment has replaced ageing components dating back to the 1970s — including some old tripcock systems that still ran on compressed air — on the Northern City Line between Finsbury Park and Moorgate stations.
New signalling system (c) Network Rail
The initial stage, after some