Final tests on Northern City Line signals upgrade shows ready for passenger service

A signalling upgrade that’s currently underway on the Northern City Line, between Finsbury Park and Moorgate, is now ready for passenger service, Network Rail has confirmed.
Overnight testing (c) GTR
Since the new signals were installed, tests have been carried out, and the latest set of overnight tests ran six digitally signalled trains in 30-minute periods. During the peak service, Great Northern operates up to 10 trains per hour on the Northern City Line. By running 6 trains at close he