My car was damaged by a guy who drove into my rear quarter panel in bumper to bumper traffic and convinced the officer and insurance that it was my fault by fab

My car was damaged by a guy who drove into my rear quarter panel in bumper to bumper traffic and convinced the officer and insurance that it was my fault by fabricating a story that I cut him off. He was trying to merge into my lane after I had been fully merged. He had stopped inches from the center of my car, and the moment he saw me move forward, he pressed the accelerator, going into my car. I suggested we move to the side of the road so that we would not block two lanes of traffic, which had worked against me because it made things look consistent with his story versus having stayed in place and blocking traffic. When I called 911 to have an officer come, the guy started yelling in my ear so much that I was deeply shaken and could not even speak to the officer well to describe what had happened. Getting consequences for people who cause accidents sounds great, but we need actual ways of achieving it. In my case, I believe retrofitting my car with a traffic camera would achieve this. I also am not going to ever move my car following an accident in such conditions until police arrive either again.