Category: London Underground

London Underground Piccadilly Line Interim Control Upgrade (PICU) Project

The London Underground Sub-Surface-Rail Upgrade Programme (SUP) is upgrading the SSR lines to a new moving block signalling system which will be controlled from a new Signal Control Centre at Hammersmith. It is anticipated that the Piccadilly Line will also receive an upgrade but this will not occur until post 2022, until which time the line shall remain on the legacy fixed block signalling system. The purpose…

London Underground Bond Street Crossrail Enabling Works

Bond Street Station Operations room underwent refurbishment as part of the Crossrail Enabling Works. To allow the refurbishment to take place numerous services were temporarily relocated to an Intermediate Station Operations room before being relocated back in the refurbished station Operations room. ARK was chosen as the Signalling Design contractor for the relocation of the Central Line Emergency Stop & Skip panel.

London Underground Metropolitan Line ‘S’ Stock Enabling

ARK were contracted to undertake legacy signalling design modifications to Rickmansworth Station to facilitate the introduction of longer ‘S’ Stock trains. This involved the re-location of numerous signals, trainstops and track circuit boundaries as well as the introduction of bespoke circuitry to enable the positioning of Fibre Optic Shunt Signals onto Gantry structures. ARK were the first Designers to implement Fibre Optic shunt Signals on gantry structures…

London Underground Crossrail Enabling Project

ARK were contracted to undertake signalling design modifications to the Train Describer circuitry to enable the correct train display information to be transferred from Barking to Bromley-by-Bow in both directions after the introduction of a new centre siding at West Ham. This work was critical to enable the new centre siding at West Ham to be utilised.