New map shows major improvement works planned on four major Tube lines

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A new map shows the extent of a huge seven year regeneration plan to improve four of London’s major Tube lines. 

The new image shows how Transport for London’s Four Lines Modernisation scheme (4LM) will simultaneously improve the District, Circle, Metropolitan and Hammersmith and City lines.

A video released on Monday also explains to commuters how the works will improve their commute.

The project covers 40 per cent of the capital’s underground network and will see equipment on much of the line replaced and technology upgraded, TfL bosses said.

Some 192 new S-stock trains will be introduced by 2023 and will run every two minutes on all lines.

Improvement work: TfL have released a new map showing the extent of work on four major lines (TfL)

The new fleet will feature air-conditioned, walk-through carriages. 

Drainage will be improved on the lines in a bid to stop bad weather affecting services.

When will the works be complete?

Summer 2016: Work began to install new signalling system


2021: 30 trains an hour to run in Zone 1 during peak times


2022: Up to 32 trains an hour added on all lines during peak times in central London and increases during off-peak times.


2023: More services added on the Metropolitan line at peak times, and increases in off peak services across all four lines

New signalling systems used on the Jubilee and Northern lines will be introduced to boost the number of rush-hour trains by 33 per cent.

TfL have warned commuters that the works – which began in 2016 – will spark some line closures.

To check your journey click here.


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