[shorodei]

I usually go at 75-80 on a "55" highway for my daily commute, never had issues even while passing cop cars. In general, as long as you're not driving like an idiot (switching 3 lanes without signalling) or running old tags, or basically have a red flag hanging, they won't bother you. Although if they do stop your for one of these reasons, they'll probably also ticket you for speeding. Speed limits are enforced far more strictly in residential areas though.