It’s true: Everybody speeds (within rounding error)

91.7% – that’s how many drivers went over the 30 mph speed limit on a section of road in Dunbarton in one week in June, according to data collected by one of those flashing speed-limit signs.

That’s the most fun part of my story today (read it here) about these signs. This is a less-fun part:

There’s a common belief that going up to 9 mph over the posted limit is somehow acceptable, as reflected in the ditty “If it’s 9 you’re fine, if it’s 10 you’re mine” attributed to a lyrical, and probably mythical, trooper. This belief, however, has no basis in law.