> I hate to say it because I've talked about the lack of enforcement of traffic laws and vehicle codes here for years (and I maintain that photo enforcement is not a solution), but this city's infrastructure passively encourages bad behavior.

This is exactly it. Enforcement doesn't solve the problems caused by bad design. We shouldn't need to write tickets for running a red light, because the light should only be red when there's opposing traffic preventing you from going anyway. We shouldn't need to write tickets for speeding, because the street should be designed such that you feel uncomfortable driving any faster than the posted speed limit. With well-designed infrastructure, we'd only need to rely on enforcement for the most egregious of violations.