Quote Originally Posted by Waterways View Post
I disagree. Modern signalling can get trains closers together, improving throughput. The only tunnelling worth considering is from Dingle to Edge Hill, creating a Circle Line that would regenerate inner city areas and create superb outer region seamless connectivity.
I agree - there is no need for another rail tunnel under the river to be considered for a good 20 years, unless it was to serve totally different areas or for another purpose.

Existing signalling through the loop and to Hamilton Square allows 2 minute headways - the infrastructure is there to meet demand when it needs it.

The Northern Line section from Sandhills to Central allows 1.5 minute headways.



For comparison, Lime Street to Runcorn is 3 minutes, and Edge Hill to Earlestown 4 minutes.