Gloucester PD sits on the shoulder near the circle where the speed limit on 128 drops from 45 mph to 25. Mostly there at night — hard to see the mostly black cruisers from behind. Easy pickings, as drivers routinely travel this short stretch of highway at 60+ mph and only start to slow down for the rotary after passing the 25 mph sign. Don’t forget to use your turn signal when exiting the rotary; they stop people for that, too. Expect to be treated as a DUI suspect if stopped.