I had something slightly different happen to me a few weeks ago. I was approaching an intersection with traffic stopped for the light in my direction. There were 2 lanes going forward that squeeze down into 1 about half a block on the other side of the intersection, and I usually stay in the right lane and turn off into a parking lot before this happens. I was positioned there waiting for the light to change when a semi approached from the rear with his right turn signal blinking. I moved over into the other lane for him to turn, and then the light changed putting me in the danger zone of a line of cars behind me. I was able to get out of the way of both the cars and the turning truck, but it sure would have been better if I hadn't had to wait just long enough for the light to change before the truck got there. ,