(12 Jan 2019, 1:38 pm)Adrian wrote I quite like the X24 for that, but it perhaps works because its a completely new route, rather than trying to change an existing. That is the only way you could really introduce an X56, because you'd create capacity issues either on Old Durham Road in Gateshead or on the Southwick side in Sunderland, depending on which side you looked at to try and speed up journey times.
Yes a limited stop on Old Durham Road would be detrimental as it's the only bus that stops at all stops. The 57, X1 58 and X25 are all limited stop or only cover half the stretch