(08 Oct 2015, 9:00 pm)Michael wrote I think letters only work on certain services.. 2/2A example, routes which have loads, such as the current TEN brand can be confusing.
Do they though? 2A/2C was originally for 'anti-clockwise' and 'clockwise'. The 2A would run Fatfield -> Harraton -> Lambton -> Galleries -> Biddick -> Fatfield, whereas the 2C was Fatfield -> Biddick -> Galleries -> Lambton -> Harraton -> Fatfield. It was sharp changed though, because it was causing confusion amongst passengers. I find you still get passengers jump on the 2/2A, and then get confused it doesn't go to Lambton or to Biddick.