Discription of Events: There was traffic on the bridge due to an accident on the other side. I gave a soft hunk of my car horn to indicate for the driver to move up. The driver started to move up and then This driver in front of me came to a sudden stop on the bridge where there is alot of traffic plus an accident. He should not have come to a sudden stop in front of me just cause I gave a little hunk of my car horn to indicate you have to drive with the traffic, you have to pull up. He cause another back up and other cars were goin around him. He also had tented blacked out windows which I think are illegal.