The Four Lines Modernisation (4LM) is a transformative project replacing old signalling on London's sub-surface lines with a Communications-Based Train Control (CBTC) system. This upgrade allows for more frequent and reliable train services. The latest work at Neasden Depot posed unique challenges due to its service to both sub-surface and Jubilee line trains, requiring precise coordination of tracking systems. Successful integration enhances passenger experiences while ensuring minimal disruption during live testing. This project represents one of the largest signalling upgrades globally, impacting 40% of London's underground network.
The Four Lines Modernisation (4LM) is replacing decades-old signalling along the sub-surface lines with a Communications-Based Train Control (CBTC) system, allowing trains to run closer together.
The Neasden depot services sub-surface trains and is a challenging area due to its proximity to the Jubilee line, necessitating careful coordination between signalling systems.
#london-underground #four-lines-modernisation #signalling-upgrade #communications-based-train-control #transportation-technology
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