Updated July 31, 2013 at 2:45pm:
In response to comments I have received, I have produced charts that show the average speed of operation on parts of the King route. This is at a very fine detail by contrast to the “link time” charts covering route segments that I published in earlier articles. The new material is added at the end of this article.
Original article from July 22, 2013:
The TTC’s Andy Byford has proposed that King Street be reserved for transit vehicles during the AM peak period as a means of improving service quality. In previous articles I have examined service reliability and congestion, as well as the history of transit priority on King Street.
The big issue whenever “congestion” comes up for discussion is that any tactics adopted to improve transit service need to address what is really happening on the street, not an abstract idea that somewhere, sometime, it might be a good idea to have some sort of transit priority. Previous analyses published here show the effects of congestion through charts of “link times” (the time taken by vehicles to travel of specific parts, or links, of a route), but these don’t pinpoint the exact locations or severity of delays.
This article introduces a new type of chart that is intended to make delay locations and times much more obvious as a starting point for discussions of where priority is needed.