Updated June 24, 2013 at 6:10 pm: In the original version of this article, I mentioned that charts for March 2012 would be added in an update. These charts are now included, and there are minor changes to the text to reflect this.
Recently TTC Chair Karen Stintz and CEO Andy Byford proposed a trial operation of King Street between Shaw and Parliament as a reserved zone for transit vehicles and taxis during the AM peak period. Their concern and claim is that they cannot provide better service without exclusivity over this area.
I believe that this proposal suffers from a lack of detailed knowledge both of the way the line actually operates and the causes of systemic delays (aka “congestion”) to service. The AM peak is much less of a problem than midday, PM peak, evening and weekend operations on the King route. The TTC would do well to concentrate its proposals on areas and problems where there would actually be some benefit. Asking for a total ban on cars rubs motorists (and their political supporters) the wrong way, and needs to be justified by solid data showing how transit would be improved. The TTC has not done this.
Normally when I write a post with analysis of a route’s operations, I prefer to wait until I have more of the data formatted for presentation. In this case, the debate is already underway in the press and in social media. To contribute some technical background, I have started analysis of route 504 King for the months of November 2011, March 2012 and May 2013.
As with past analyses, the information is taken from the TTC’s vehicle monitoring system known as “CIS” which uses GPS to track the location of all vehicles every 20 seconds. The GPS data are converted to a “flattened” view of a route which is a straight line (think of a piece of string pulled out taut). Once this is done, plotting vehicle movements, headways at points and running times between points is greatly simplified. (I plan to publish a separate article in coming weeks for those interest in the details of this process.)
Note that vehicles on 508 Lake Shore are not included in this analysis. Only three inbound trips are scheduled during the AM peak.
Because the proposal addresses a reduction in running time and reduction of congestion in the central area, I will concentrate in this first article on movement of streetcars over the proposed exclusive area. Other sections of the route and aspects of operation (e.g. headway reliability, short turns, time spent serving stops) will be the subject of future articles.