If you put the metro on the line to seaham we’d have to rely on a connection to the east coast mainline via Durham / leamside line instead? Or is there sufficient number of lines via seaham to maintain both?
Honestly, unsure if I had to be honest with you, on that one. Guess it would depend how far it went.
Must say I always think the Metro was a big mistake to Sunderland and they should've built a National Rail service similar to Thameslink in London, S Bahn in Germany or the RER in Paris.
It's really limited the line, could've easily if it was National Rail had extensions South now. But the Metro trains, they're unusual voltage for the UK, inadequate seating for long distances and are too slow.
Similar if you extended one of the Stadium of Light platforms on concert days etc could've have a 4 car train or even longer and shifted the crowds.
Shame really.