Analysis of 512 St. Clair Operations for July 2010 — Part III (Headways)

In two previous articles, I have reviewed the St. Clair car during its first month of operation on the new right-of-way over the complete route from Yonge to Keele.  Running times during busy periods are down compared with April 2007, when the only right-of-way was between Bathurst and Yonge Streets.  However, the situation with headways, an important factor in how riders perceive service quality, is quite another matter.

For the entire period of construction, the idea of regular, scheduled service was something of a fairy tale on St. Clair, and both the streetcars and buses made their way such as they could along the route.  One would commonly see vehicles taking long terminal layovers, and headways were not a big priority.

In analyses of other routes, there is a common factor that is independent of the route’s length, the time of the year, the weather, eclipses or any other phenomena:  vehicles do not leave terminals on a regular spacing.  They leave when they get around to it, a practice abetted by the TTC’s standard that ±3 minutes is considered to be “on time”.  Pairs of vehicles can travel together on routes with short headways and remain within this standard.

Continue reading

Analysis of 512 St. Clair Operations for July 2010 — Part II (Link Times) (Updated)

In the first article of this series, I gave an overview of the data for one day’s operation on the 512 St. Clair route in July 2010.  Here, I will review link times (the time taken to get from one location to another) on the route for the entire month, and compare this with data from April 2007 when the St. Clair car last ran over its full length from Yonge to Keele.

Updated December 29, 2010 at 9:50 am:

A set of charts has been added comparing the running times between Keele and Yonge for April 2007 and July 2010.  See the end of the article for links and commentary.

Continue reading