he pulls you over? DO YOU KNOW HOW FAST YOU WERE GOING? If you do know and tell him, then it's a "confession" and you just got nailed. If he didn't have a radar gun, he may not know exactly how fast you were going unless he tailed you. The best answer without pissing him off is "NOT EXACTLY SURE OFFICER, AS I WAS PAYING ATTENTION TO THE TRAFFIC/ROAD CONDITIONS". I have gotten SEVERAL speeding tickets over the years, always knew how fast I was going and always got a break because I never "confessed".