(17 Jan 2014, 9:14 pm)busman101 wrote The X21's I've been on have been spot on all week and getting busier too, but that is on the bit North of Durham
citaro5284 mentioned there was only a few instances of lost mileage.
These breakdowns must be happening pretty close to depots or bus stations for replacements to be organised and no mileage lost.
I wonder if the same could be said about the Wear Tees Xpress?