Evolution of Travel Times on 504 King in 2020

The reduced transit riding and auto traffic in Toronto during past months provides an opportunity to compare travel times during what used to be “typical” conditions with the situation when there is no congestion and stop service times might be shorter.

This article examines the 504 King route from January to May 2020. I plan to publish data for other streetcar and bus routes, but I am awaiting the May data extract from the TTC’s new Vision system which tracks all buses and a substantial portion of the streetcar fleet. (In May, the King route operated substantially with cars using the old CIS system from which I have already received data, and so there are enough data from that route to represent its operation.)

504 King operates with two branches: 504A from Dundas West Station to Distillery Loop, and 504B from Broadview Station to Dufferin Loop. Only trips late at night after service to Distillery and Dufferin Loops ends make the full trip between Broadview and Dundas West Stations. For this analysis, I have split the route in half at Yonge Street to measure travel times to that midpoint from the outer ends of the lines.

The change in travel times is quite obvious looking at month-by-month averages. In the charts below, travel times are averaged for all weekdays in each month, grouped by hour of departure from Danforth and Broadview. (The screen lines at terminals are located far enough from the loops to avoid including queuing times to enter crowded loops in the measured travel times to and from Yonge.)

January and February (red and yellow) are the highest because they represent normal pre-covid conditions. During March (green), the amount of transit riding and traffic began to fall as offices closed and non-essential travel was reduced. The King car was particularly affected because it serves the business district. April and May (light and dark blue) represent a “new normal” for travel times.

Note that in these charts, the Y-axis does not begin at zero so that the spread in the data values is clearer.

(A full set of PDFs of these charts is at the end of the article.)

Although the monthly averages show a clear pattern, the weekly values change within the two broad bands of pre- and post-covid conditions. Note that for this chart there are no data for the week of April 20 because streetcar service on Broadview north of Gerrard was suspended for track repairs.

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