Any Winnipeg street after the first couple of snowfalls ice things up. It's not the condition of the streets that you have to worry about, but the drivers. It takes them a couple of weeks to adjust their driving habits, and until then it's open season. Twice this winter I've had to bunny hop up on to the curb to avoid being hit by some idiot who didn't realize that 4 wheel drive won't help him stop his 6 ton SUV in less than 20 feet when he's doing 80 km/h.
