The R68/R68A currently as of when this project was made run on the D,N,Q,W. They will be replaced by R211s and R268s. The R68 and R68A are very similar so its hard to tell apart without that "easy way" I tell you about. So the easy way to tell them apart and it is by car number. (If it starts with 2 its an R68) and (if it starts with 5 its an R68A)
