Seven over?

Saturday night I got pulled over on I-95 for doing 72 in a 65. I was only given a warning, no points, no fine, no nothing. But seven over gets me pulled over? It was right past the Perryville/Maryland Dept. of Transportation ATM, or the Toll Plaza. (Five Bucks!) I ran over a styrofoam lid and I wonder if Smokey thought something was up. I was in the center lane, getting passed by other cars. My red minivan must have stood out among all the other ignorers of the speed limit. Oh well.

I was guilty. I was not going 65. But wow, seven over? What's the limit when it comes to ignoring the speed limit?