TheTigerMaster
Superstar
From this data, we will never know. I suspect that student ridership is one source of incidents, because fare evasion is a rite of passage for high school, even if you have a pass in your pocket. And high scool students just get stupid in packs. Seeing Ossington in the data immediately made me think of CAMH, but that's likely my own little bit of stereotype. I would have thought of 501 as the mother of all troubled routes.
In all but one cases, the most frequent incident type fare fraud, so I think your high school hypothesis makes sense. This would also disproportionately affect people who are of lower income.