I know what you mean about speed!! I find that people run 10 or more miles per hour over the limit and nobody cares. They only clamp down on a section of highway if there are fatalities. Here near Huntington, West Virginia we have a major construction area where it is upgraded from two to three lanes in each direction. It has concrete barriers on each side and no shoulder area for about 3 miles. The posted speed limit is 50 with NO LANE CHANGES. Since this construction has been in progress for over a year with about a year to go, motorist and commercial 18 wheelers are now running 65/70 + in this section with constant lane changes. Law enforcement now has given up and there continues to be some motorist risking everything just to shave 30 seconds off their commute time.