Variable speed limit signs : effects on speed and speed variation in work zones. Prepared for Utah Department of Transportation Research and Development Division.

Technological advances allow speed limits to be changed in real time based on actual roadway conditions. There may be potential advantages to using variable speed limits in Utah, such as for traffic control during construction where the speed limit may be lowered adjacent to actual construction activities versus at other times or locations within an established work zone. This research will test the compliance and derive potential advantages from the use of variable speed limit equipment. (Author/publisher)