And even worse is that the TTC's "trip index" is also the highest. Riders must take 49 rides per month to make the monthly pass worthwhile. This equates to having to commute all the 22 work days in a month, never taking vacation or being sick, not even taking off Canada Day or Christmas or other statutory holidays, and then travel eight more times in the evening or on weekends. No other city has such a high index - the average for the entire 29-city set is only 36 trips.