Routes prefix is sy.
First South Yorkshire employs branding on a few of its routes. The brand applied to a vehicle will be shown by a letter next to the fleet number. Generic (non branded) buses just display without a brand letter. Current brands are :-
| d = | Doncaster | |
| k = | Peak Link | |
| m = | Mainline | |
| p = | Pink Front | |
| r = | Red Front | |
| s = | Sheffield | |
| x = | X1 Steel Link | |
| T = | Training | |
short codes specific for First South Yorkshire are :-