To me the reason is the right-on-red rule. I still find it insane, and I have been in Canada for 9 years. In my driving classes, I have been clearly explained

To me the reason is the right-on-red rule. I still find it insane, and I have been in Canada for 9 years. In my driving classes, I have been clearly explained that a right-on-red must be treated like a stop sign and that to turn, there needs to be two lanes free of cars: the one you are getting into and the next one (if one lane is available,this doesn't apply). Many,many drivers treat the red light like a green light for turning right and that's the root of the issue.