(11 Jan 2016, 4:25 pm)S813 FVK wrote Why has 4899 being swapped for 4896 at Stanley? Is it because 4899 is in the middle of a batch of vehicles unlike 4896 which is at the start or is it for some other reason?
4896 is the official float/reserve vehicle.
4899 was only there on loan to cover for 4896 while it was VOR for PSV test.