Road design, safety and Vision Zero

[SammyOES]

I would guess that based on AADT the 401 is safer than a lot of smaller roads(for fatal collisions)  The percentage of cars on the road that get in accidents is lower than on a road that carrier 1/10 of the traffic. All traffic going in same direction is similar to why roundabouts are safer (fatality wise) than standard intersections.

I think the measurement that is most relevant is per km driven. I think that’s what the link previous was using and accounts for traffic.

My continued skepticism is that typical 4-lane divided highways in the States don’t really compare that well to the 6 to 24(?) lane, heavily trafficked, higher effective speed highways like the 401 in the Waterloo-to-GTA area. But like I said, it’s definitely closer than I realized and it’s quite likely I was wrong.