Two-Thirds of Speed Camera Photos Tossed

Part of the problem in Arizona, King said, is that the state has a driver-responsibility law, like Colorado, California and Oregon. That distinction means DPS officers have to match the photo of the speeder with one on a driver's license.

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Other states, like Louisiana, have a registered-owner responsibility law, which requires authorities to match only the license plate with a registered owner. The owner gets the ticket, even if he or she wasn't the one driving.

Remember, borrow a car in LA.