Well, most stations have at least two/three exits, even having letter/numbering for those stations (A, B, C) would be much less cumbersome than referring to "College St, North Side, Yonge Street, West Side"

Anyone know why the TTC doesn't have a letter/numbering system for its subway station exits? (so for example, Exit A, B, C, A1, A2, like what they do on MTR)