Twice; once at the airport ....there were two troopers watching traffic, one of them pulled me over, as he was walking towards me a car blew thru a stop sign and took off, he jumped into his cruiser and went after it. I sat there for a couple of minutes until the other trooper came over & told me to move along.
The other time I was doing a Saturday route in Natick, Ma and to get from one side of town to the other it was quicker to go into the bordering town,the road follows a stone wall of a farm, and sure enough in the only break along this wall sat a police cruiser with a radar gun. He pulled me over and when he walked up to my cab, I stated that I knew I was going to fast, he let me go with a verbal warning. Then next time I drove along that road I did 20mph ,had traffic backed up quite a bit, yet no cop this time.