Snohomish County Sheriff sits on shoulder of Northbound South Machias Rd. Nights, in a dark unmarked squad. Half way between Three Lakes and the old Meat packing plant (new fire training center.) At the end of the catch basin, up against the fence. There is a slight rise if you are southbound. They are hidden by tall weeds if you are northbound. They use radar. The reflectivity of the speed limit sign for southbound traffic is subdued.