If you know where every speed-enforcement camera is, and if you track where the cops normally park, you can speed and get away with it. Well, that's the theory.

If you subscribe to that theory, then there's no better resource than speedtrap.org. It's a national registry of speed traps — both conventional cop stakeouts and photo-radar locations. Simply log on to the Web site and click "Arizona." Then click the name of the city you plan to speed through.

The only depressing thing about speedtrap.org is how incredibly thorough it is. In the city of Scottsdale alone, Speedtrap lists 47 photo and conventional speed-trap locations — the vast majority of which are 100 percent legit.

Of course, thanks to Governor Janet Napolitano's push for statewide highway photo enforcement, you can mark the entire freeway system of Arizona as speed-trapped. In recent months, those white photo-enforcement vans have been popping up along the I-10 and even the I-17. So much for the Wild West.