I have no issues leaving 3-4 seconds between myself and the car in front, but Edmonton isn’t Toronto, so cant say about there.
I have driven in Vancouver (awful) and can usually maintain a safe distance even if people fill in. It does take patience.
I would say that despite our numerous red necks and crappy drivers, Edmonton drivers are among the more courteous. I get the occasional jag-off not letting me on the freeway, etc, but overall it’s nothing like the melee that is Vancouver.
Bad drivers? We got lots! But it seems like the majority of them are just incompetent, not aggressive.
Calgarians are a bit worse. They certainly feel more angry. The tone of the city is quite different from Edmonton though. People are more status conscious and much more concerned about money. I have a lot of family there and we don’t have much in common that way.