What causes the loud noise on the tube?
What causes the loud noise on the tube? The rail squeak, as it is more technically known, is what causes the noise in some areas of the network. It is created by the metal wheels against the curve in the tracks.
Do trains go faster in tunnels?
No - it's the other way around. What's known as the “piston effect” occurs in tunnels, where the air in front of a passing train has to be pushed in front of the train rather than being dissipated in all directions in the open air.
Which tube line is the coolest?
If you're seeking a cooler tube ride, you'll want to stick to the Jubilee or Waterloo Lines. With an average of 26.9C and 25C respectively, they recorded the lowest temperatures.
What are the noisiest parts of the tube?
Dr Sollini told the programme: “The Central Line has the loudest section out of all of the Tube lines, and it basically gets as loud as almost 110db, to put that into perspective that is approximately as loud as going to a gig or rock concert.
Which tube line is most polluted?
Researchers have found the underground lines with the most polluted air are the Northern, Bakerloo, Jubilee and Victoria – because they are the deepest.
Which is the deepest Tube line in London?
The deepest station is Hampstead on the Northern line, which runs down to 58.5 metres. 15. In Central London the deepest station below street level is also the Northern line.
Why do trains honk before going into a tunnel?
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.