speed bumps and really low speed limits. They took a car that got 58-mpg running a constant 30-MPH, and ran it over speedbumps at the Millbrook Proving Ground, slowing down and speeding up for ...

The speed limit for the roundabout is 10 mph. When traffic is heavy, it is very risky to enter the roundabout because people do not slow down. Would speed bumps ... limit as the sign with black ...