"I'm always very nervous driving past a lane of stopped cars for this very reason. You've got to be ready for it to happen, becasue odds are it will. I'm usually covering the brake in that situation."
Thats the hard part. I mean speed differential determines the severity of a collision. Thats why undivided highways are the worse you can be in.
In a one-directional travel, what speed would optimal if you are traveling the Whitemud freeway (Deerfoot Trail in Calgary) if the lane to your right is stopped. Seems to happen alot of the time; it forces the entire road to slow all the way down.
As for my situation, I was already on the brakes... but based on the distance, condition of the road (snow covered), there would have been no room to stop in time.
Plus I just got my car a few months ago.