Woodbine loop, sure. But Kingston Road other than a few metres to access Woodbine Loop? When?
... there aren't any 504B's scheduled after about 7 pm on weekdays, and not at all on weekends. They (and 502s) are the only ones going up Kingston Road. I've only seen CLRVs so far.
Today? Was just down at Kingston and Queen. I only saw 22s, some 504 Flexitys (and perhaps CLRVs) turning at Woodbine Loop, and 501s on Queen. I certainly didn't see any 502s! Perhaps they are using that route number for testing? Which car number?