Yep, but a road tunnel won’t do that unless you live/work either end of the tunnel.
Both cities and their ring roads are already over capacity and all a tunnel will do is add more cars into this mess. An itegrated plan would get commuters off the roads by enticing them onto rail. That’s huge though and requires a massive upfront investment with many years until payback. So although it is the job of government to provide the infastructure the country needs to thrive in the long term no polictical party will propose the policy as instead they will pander to the car obsessed masses and spunk loads of cash up the wall on short term road plans that won’t offer a solution and instaed just make people even more reliant on their cars. Yay.
This +1.
A quick train link between Manchester and Sheffield would probably tempt me back upto that part of the world as it would make it practical to live in Manchester or Sheffield and work in the other, which doubles the chances of both me and SWMBO finding jobs, and really I’d rather live in Sheffield but the work’s in Manchester for me.
It’s a bit like living in London, it doesn’t matter where you both work, just about everywhere is accessible on the public transport.