How do they get the tub trains down to the underground?

Question

How do they get the tub trains down to the underground?

Answer 1

They run them in on rails.

Answer 2

With the exception of the Waterloo & City line (whose only access is by a shaft from street level round the corner from Waterloo station) all the other London underground lines have "interchange" tracks, some of which are not used in passenger service, with each other and the main line railway system although nowadays the stock to and from major overhauls or repairs to points outside the London area tends to go by road.

Out of interest, there are two points on the system where it MIGHT be possible to run a "surface stock" train (Met, District and East London lines) into tube tunnels which are of course much smaller, and measures are in place via the signalling system to prevent this happening.

Answer 3

Oh, you mean tube trains.

Answer 4

The other city in the UK with an underground railway besides London is Glasgow. There the trains run on 2 circular tracks which are completely underground, and have to be raised and lowered in and out of the tunnels by crane for repairs, etc.

Answer 5

All the underground lines go above ground somewhere (bar one). In places the lines link into the main line systems, most notably at West Ruislip Depot which lies between the end of the Central Line at West Ruislip and the Metropolitan/Piccadilly Uxbridge branch. At one time a lot Underground stock was built in Birmingham and used to be hauled down the line from Birmingham to Paddington and then into that depot. That doesn't happen so much these days as, stupidly, it is cheaper to haul the stock by road. There are links between the various tube lines which passengers do not see and which are used to transfer stock from line to line in order that it can reach various depots for overhaul etc. The one line without any connection to another, or surface line, is the short Waterloo and City line. All the stock on this was overhauled last summer and had to be lowered, car by car, down a deep pit in the ground, near Waterloo Station, which was built for the purpose of removing and delivering cars to the line. C5 did a programme in its Monster Moves series showing the work that was necessary to replace all the cars in the right order  That was quite tricky, for there was little point in lowering a driving car into the middle of a train!

Answer 6

I believe that all of the tube lines go above ground at some point, save the Circle and maybe one or two others.  So what they do is they put the trains on the above ground tracks, and just run them into the tunnels.  For the lines that are completely underground, they start the trains off on a different line, and switch them over once they reach the line that they will call home.