Huntsville PD usually set up their speed traps near underneath the tree on the border near the sign which says "Huntsville City Limit". Speed limit is 55, when the state advises divided two lane highway in an urban area should be 60. Undercover state trooper in a white Dodge Charger also patrols the area usually from 7-12 AM on Saturday and Sunday mornings, but is almost always patrolling the highway. He also sits on the left shoulder near the turn of Kelly Springs Rd.