I hate it when that happens. I was sitting at a light with a 18 wheeler fully load to 80,000 in Roanoke Va. When I hear this horn from behind me somewhere but do not see anything. It was close to 4 pm in the spring, nice clear day. As I looking in my mirrors I see steam and then something running out on to the street. I set my brakes and four way flashers, get out and walk back and see a car under my trailer. The car was just inches from the front windshield, the hood was mashed down to the engine. The DOT bumper bar was sitting on the hood, the car was wedged under it. I called 911 ask for police, fire and EMS. The lady that was driven was stuck inside the car door where jamed and her hands broken from air bag. Well she tells the police officer that I just stopped without any warning and did not have time to stop (which the officer knew was a lie) other people that where following her seen that I was at a red light with brakes lights on. But the fire dept. opened her car up like a tin can with the JAWS of Life, tearing it up more. And gets to go to the hospital for the broken hands. Well after she was out the police ask me if I could get my rig off her car, I told him I could try. So I start to pull forward and hear the officer telling to stop when the tire's on the car blow out, as the car was getting dragged. I ask him, what did he want me to do? The DOT bar was wedged between the fire wall and the engine, lol and was not going to come out easy. Ended up the a semi wrecker was called to lift my trailer up while another wrecker pulled her car out. By this time the woman's husband is there to pay for the tow company to remove the car and haul it away. The officer hands him a hand full of tickets, speeding, failure to control the vehicle, no insurance, out of date inspection, reckless driving and something else. The officer tells me I have to show in court to get damages to the rear of the trailer to be court order payment. He asked me if I even knew she was under my trailer and I told him if not for her horn going off I would have never knew she was there till I took off and dragged her down the street. Glad I did not could have started a fire. Well We had the DOT bar fixed and the bill was a few hundred buxs. I go to court and she was so pissed when the judge took her lic. and order her pay for the damages on my trailer.