Sept. 23, 2013
Researchers at Virginia Tech are looking into reducing traffic accidents on a foggy portion of Interstate 77.
The researchers are conducting studies to determine the ideal brightness and color for new variable speed limit signs, which can be quickly changed to drop the speed limit when visibility is reduced.
The Virginia Department of Transportation plans to install 22 of these signs between Fancy Gap and the North Carolina border. The system also will have cameras and detectors for fog, wind and traffic.
Currently, there's only one electronic message board in each direction near the fog-prone area to warn drivers.
On March 31, three people were killed and 25 were injured in a 95-vehicle pileup.