© Copyright Vertex Systems Engineering. All rights reserved. CASE STUDY CASE STUDY #3 Victoria Phase 2 Re-signalling Project Overview of Deliverables The majority of the signalling in the Victoria ASC control area was commissioned in 1980 with the West London Line being added approximately 11 years later. The signalling uses a route relay interlocking system with the majority of the equipment installed in remote interlockings (GEC-GS), remotely controlled by TDM operation. Many of the GEC- GS installations installed at this time have been known to suffer from wire degradation problems and the Victoria area interlockings are confirmed to have this problem and require replacement. The Thameslink programme will use parts of the Streatham, Sutton and Wimbledon interlocking areas t

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