i know i went off topic there but it is about how to plan vehicle movement's and what routes they are allowed on. It cant be that bus you want come to your depot as it would need Strict allocations so like the Euro 4 Voyager Scania N270UD OmniDekkas which will have to become a spare for the 26/50 as it will not be allowed to Enter Newcastle for free and it will have to be the route GNE takes to pay to have their Under Euro 6 Vehicles in Newcastle for about 10 Minutes or so for them to leave and then repeat that process when it comes back which will cost more. So thats why buses like the former Coaster B5LH's got took off the Coaster 1 and got replaced by the Daimler Euro 6 Streetlites as the B5's are Euro 5 and like i said the Streetlites are Euro 6. Its not that GNE don't like the bus on the route its that they need to prepare for the LEZ.

--------------------------------
For this, for the X1/56 with them being every 15 mins respectively they could just turn around at gateshead same with the 21 and make sure passengers get on the right service. 

The only issue I am thinking of is if that X1 is going to Peterlee or Dalton park, or the 21 Durham or Brandon.