The trap is mobile and when I first encountered it there were at least ten Az Highway Patrol cars involved, all in the process of writing tickets. Why I am posting this information is because of the manner in which cars were being targeted: A short distance and on a curve prior to finding the string of patrols which were issuing tickets I had noticed an older unmarked police car (plain Jane) parked in the breakdown lane. The unmarked unit had been disguised as that of a broke down car complete with a Highway Patrol inspection notice in the rear window. However as I passed the car I noted the cop inside hunched down and calling out the shots over his radio.