Network Rail has switched on 116 new state of the art digital signals on the railway across parts of south west London and Berkshire, as part of the four-year resignalling programme to improve reliability.

The railway reopened as planned on Saturday, 02 September, following a 14-day, three-part closure between Barnes and Virginia Water, Windsor & Eton Riverside and Hounslow, to allow Network Rail to switch on the newly installed signals.

Since Saturday 19 August, Network Rail’s team of engineers has worked around the clock to commission the 116 new signals – the railway’s traffic light system – and finish upgrading seven level crossings during this multistage closure.

Following the completion of this work, passengers will benefit from more reliable journeys and fewer delays on the Windsor Lines, which are a key route for commuters in and out of London.


The previous signalling system and track circuits – which tell signallers where trains are on the network – were controlled by the Feltham Area Signalling Centre and dated back to 1974 so needed upgrading as they had become less reliable and harder to maintain.

Control of this part of the railway has now moved to the Basingstoke Rail Operating Centre, a purpose-built rail hub that is shared with South Western Railway (SWR).

Over the past four years, as part of the wider £116m Feltham and Wokingham re-signalling programme, Network Rail’s engineers have installed 116 digital signals, 11km of new cabling housed in 14km of refurbished cable ducts, 27 new under-track cable routes to support the new technology and upgraded seven level crossings.

The Feltham and Wokingham re-signalling programme will be concluded in early 2024 with the completion of upgrades to key signalling equipment controlled by the Feltham Area Signalling Centre and Wokingham Signal Box, which jointly cover 80 miles of railway and 500 separate pieces of signalling equipment. A total of 13 level crossings will also have been renewed or upgraded, all with the aim of improving train performance and ensuring passengers enjoy more reliable journeys.