This speed-DUI trap is set up on weekends. It is for folks coming home from tubing on the Salt River. It is set up after the ridge on the hill coming out of the Salt River plain into Mesa. Mesa/Maricopa county sheriffs usually have about 4 motorcycle officers at the top of the hill where you would naturally speed up when the steep hill levels out. An additional trick here is they usually have another radar trap a mile down the road when your guard is down!