Speed limits are a subject of constant discussion across America, and because of decentralized state regulation over the limits, there can be a wide variance in limits from state to state. Arizona, ...

Add Yahoo as a preferred source to see more of our stories on Google. Speed cameras are likely to have a little bit of leeway, but drivers should still take caution. (BrianAJackson via Getty Images) ...

A proposed 10 mph speed limit has struck a nerve, turning an ordinary traffic rule into a wider public fight. What looks simple on paper feels far messier on the road, where patience, timing, and ...