From a comment on Steve Munro's website at this
link...
After walking or poor bus service on Roncesvalles for years hopefully 505 & 506 returning to the yard on Roncesvalles south bound towards Queen always go out of service for the the 5 stops from:
Howard Park
Grenidier
High Park Blvd
Garden Ave
Marion St
505 and 506 Streetcars for five stops on line 504 heading southbound on Roncesvalles to the maintenance yard are always out of service. Why?
Steve: This is a long-standing issue with the TTC. Years ago, there was a policy to run in service, but then it was changed at least for buses so that they could run express to their garage, often at routes that did not follow their usual path. Streetcars obviously have to follow the tracks, and my understanding is that they are supposed to run in service, but often don’t because operators prefer a private trip back to the carhouse without having to explain to people that, no, we’re not going to Neville, or wherever. Seasoned riders use the carhouse trips, but they are less and less available. I will chase this issue with TTC to see what the official policy is these days.