K band radar from stationary patrol car. They park with lights out on the left side of the road at the west entrance to Isle of Armstrong which is just over the Thunderbolt bridge. They use instant on radar and wiat until you are within 200-300 feet. They are well hidden by the entrance sign to the Island. White Ford partol cars. Speed limit is 45 but they don’t seem to be interested in anyone going under 60mph, most of the time.