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Why are train tunnels so narrow?

Smaller tunnels are cheaper to dig out then bigger tunnels. This was especially important over hundred years ago before modern tunneling techniques.



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London Underground is longer than the Paris Metro at 250 miles, compared to the parisians 133 miles.

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Hampstead is the deepest station below the surface, at 58.5 metres (192 ft), as its surface building is near the top of a hill, and the Jubilee line platforms at Westminster are the deepest platforms below sea level at 32 metres (105 ft).

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The New York Subway has more stations than the London Underground. Both systems have almost the same route miles. The New York Subway has more track miles because many routes have four tracks rather than the London Underground's two tracks.

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Thames Tunnel, also called Wapping-Rotherhithe Tunnel, tunnel designed by Marc Isambard Brunel and built under the River Thames in London.

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If for no other reason, the horn can alert those folks to get to safety. either to alert people when they enter the tunnel(like MOW, or trespassers) or in some cases, to be friendly at kids(or railfans) at the tunnel entrance.

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Mole people (also called tunnel people or tunnel dwellers) are homeless people living under large cities in abandoned subway, railroad, flood, sewage tunnels, and heating shafts.

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Essentially it has to do with history. Rail tunnels in the uk vary in sizes due to different builders and standards throughout history. This means that their loading gauge (how high off the tracks) needs to fit these tunnels. To maintain space in the coaches they adopted a pear like shape.

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The Thames Tunnel construction was started in 1825 by Marc Isambard Brunel and completed by his son Isambard Kingdom Brunel to open in 1843 as a foot tunnel. It became rather notorious for the goings on in the fairly dark tunnel and was sold to a railway company to serve the docks in the Rotherhithe area.

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While you can't walk through the Thames Tunnel, you can head underground into our spectacular Grade II* listed Tunnel Shaft which once served as the Grand Entrance Hall for Victorian visitors.

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About. The Royal Borough has two foot tunnels at Greenwich and Woolwich which are used by 1.5 million people a year to cross underneath the river Thames. From Greenwich, you can use the foot tunnel to walk to Island Gardens on the north of the river for the famous Canaletto view of Greenwich.

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THE world's first metro, now the world's oldest system, is the London Underground in England, which is more commonly known as the Tube, which was opened in 1863. At 402 kilometers in length the London Underground is also the world's second longest metro system.

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Redbridge is often described as the shallowest deep level (as opposed to cut-and-cover) station on the network, as it is only 5.2 metres (17 ft) beneath the surface.

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Baker Street is a London Underground station at the junction of Baker Street and the Marylebone Road in the City of Westminster. It is one of the original stations of the Metropolitan Railway (MR), the world's first underground railway, opened on 10 January 1863.

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With a vertical rise of 90 feet (27 m) and a length of 200 feet (61 m), the escalators at Angel station are the longest on the Underground, and in the United Kingdom.

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