Georgia State Patrol situates themselves on Interstate 75 near the Moores Mill overpass, either on the northbound, or southbound side of the highway. Traffic is comming from a posted 65 mile per hour zone into a posted 55mph zone. Traffic is also comming around a blind curve and a rise in the grade of the highway. The officers are positioned so that they can capture the speed of motorists as they are comming out of a curve, and are going down a slight downgrade.