(22 Jul 2014, 5:37 pm)Kuyoyo wrote Arriva's X3a must confuse you then :p Although I prefer Arriva's use of smallcase suffix letters on the timetables (shame they can't follow that onto the destination screens - not like they can't).
Darlington depot used to have 13a and 13b in lower case on their LED screens. I hate services that have a capital B in them because its difficult to tell if its a B or 8, eg. Arriva 1B in Bishop Auckland.
Can't stand X3A or X1A it looks awful.