(22 Aug 2014, 8:54 pm)NEBCD Malarkey wrote Another major problem is that the M2/M3 Interwork at both ends of the Route also, so for example the M2 Coming into Birtley will depart as an M3, Overall having an Knock on Effect to the Service again once it reaches Heworth, where it changes back into an M2, simply to keep the PVR as low as Possible.
Lower PVR = Lower Costs. Adding an additional vehicle in means increased running costs (extra fuel, extra drivers so increased wage costs) which may drag the service from a small profit into a lose, which would then of course see it cut back or even frequency reduced.