Millbury Street in Grafton is where I have seen the Grafton Police sitting on the side of the road in different spots. I think that is thier favorite spot in town. The speed limit is posted for 30 on the whole road. They like to switch up their spots to sit so be careful, they sit there at different times of the day, sometimes you dont even see where they are sitting from the road. Especially during the school season b/c there is a school zone which is 20 mph and they will write you for that. They are really strict in that area during the school zones. I heard the Grafton Police like to write tickets on that road. I have also seen them sitting on that road late at night. The Grafton Police will stop you for doing anything over 10 miles an hour