State Troopers using marked camero and Chevy, unmarked blue Tahoe – laser and instant on radar. They will sit hidden by a pillar under I/S 990 facing westbound, catching westbound traffic. Only days and early evenings. they will catch eastbound at the Colvin exit sitting in a paved section of the median used only for speed enforcement. Some of the Troopers will deal on the spot and lower the speed to a seatbelt violation – talk nice to them. Veteran Troopers who have a human side.