Toronto cycling collision hotspots and busiest cycling routes don't quite match up

I noticed some interesting, updated information in the background info for the Bloor Street Pilot Bike Lanes in regards to mode share and collisions for cycling. Collisions are higher where you'd expect them to be: where more people are cycling. But they don't match up cleanly. If they City is serious about reducing the number of cyclists killed and injured, focusing on the southeastern part of downtown.

First is updated statistics on the cycling mode share:

Wow! My biggest takeaway is that downtown cycling is approaching 1 in 10 of all trips! (More if we are just looking at Ward 19).

And also a heatmap of cycling collisions in Toronto over a 10 year period:

This is also quite interesting. The hotspots seem to be in the bottom of Ward 20 and top of Ward 28/bottom of Ward 27. Perhaps Richmond and Adelaide and some north/south streets. These results are over a ten year period from before the cycle track installations in the area. I mashed the two together to get a better idea of how they overlap.

These areas are also areas of much heavier cycling mode share than in other parts of the city which increases the size of "KSI" (Cyclist Killed and Major Injured) as well. But for some reason Ward 19 which is at 11.4% mode share has fewer and smaller hotspots than the bottom of Ward 20 at 8.6% and top of Ward 28 at 5.8%. It is entirely likely that cycling levels have flucuated differently in these wards but I'm willing to bet not a whole lot. So I presume that those two big hotspots are particular areas of concern. And it makes me extra happy that we now have cycle tracks on Richmond and Adelaide. Let's now make them permanent and reinforce them even more. But I'm sure there are other streets of concern in the area. We can't know unless we get better detailed maps or raw data from the City.