London Banter - View Single Post

Tony Polson · March 11th 06, 03:21 PM posted to uk.railway,uk.transport.london

wrote:

IIRC, the top of the 'Service Tunnels' - currently used by taxis and
no longer available to cyclists or pedestrians - is at the same level
as that of the main tunnel. The floor level however, is somewhat
higher than that of the the road tunnels. Some excavation will be
required.

If you looked at the .pdf document (the URL was in the section of text
you quoted in your post) all would become clear.

The former taxi tunnels, which are no longer limited to taxis and are
freely available for cars, are in the upper half of a two cell
structure. The lower cell is not currently in use.

The proposed new transit system would use both the upper and lower
halves.

As I said, it is all in the .pdf document. All you need to do is
click on the link, which you included in your post:

http://www.atsltd.co.uk/media/casest...se_studies.pdf

Look at the diagram on Page 4.