Lots of police, both city and county. All have rolling radar in their cars, so just meeting them can get you busted. Highest speed limit in town is 45mph and that is heavily patrolled (Bryden Canyon). Next is 35 on a 5 lane (turning lane in center) on 21st St. and on Thain Road. There is also a section of 21st St. that is 4 lanes with sidewalks that is posted for 25mph. Lots of hills in town so look out going downhill. City police occasionly run major trap with hand-held guns hiding behind bridge abutments on Idaho side of Interstate Bridge (4 lanes)from Washington that is posted 25mph.