In this Toronto Star article, they name the busiest intersections in the city.
http://www.thest
ar.com/news/gta/transportation/2015/04/10/the-10-busiest-intersections-in-toronto-are-.html
YONGE ST. & DUNDAS ST. 129,704
YONGE ST. & EGLINTON AVE. 128,564
BAY ST. & QUEEN ST. 115,940
DUNDAS ST. & BAY ST. 115,382
KING ST. & JARVIS ST. 110,768
STEELES AVE. & HWY 404 108,356
AVENUE RD. & BLOOR ST. 105,502
MARKHAM RD. & SHEPPARD AVE. 99,315
BAY ST. & WELLINGTON ST. 97,014
YONGE ST. & CARLTON ST. 95,650
Here are the most recent traffic counts from the city of Toronto web site.
https://www1.toronto.ca/City Of Toronto/Transportation Services/Road safety/Files/pdf/24hourvolumemap2013.pdf
Based on the numbers provided by the city attached, the intersection of Yonge and Steeles appears to be the busiest in the city in number of cars. Using the numbers provided combining all directions it appears between 91000-96000 (2012-2013 numbers) vehicles should pass through the intersection every 24 hours.
I couldn't find another intersection with what appears to be higher vehicle traffic on this Toronto Transportation document.
The Star article uses 67,000 (2010 numbers) for vehicles and 6000 pedestrians. Not sure how this is possible based on the cities own numbers provided.
When we look at traffic count numbers from York Region they also omit this intersection from their counts.
http://archives.york.ca/councilcommitteearchives/pdf/part 3.pdf
I guess no-one wants to claim this corner as their own?
Add to that the fact that intersection sees among the greatest number of buses of any in the GTA intersection and I believe this should certainly be in the top 10 list.
This intersection represents the crossroads of Three cities and the gateway to Toronto (and York Region). Maybe because of the divided nature of the location and the stall in transit improvements (ie Yonge Subway Extension), no-one wants to look objectively at this location?