This summer, the Washington State Department of Transportation (WSDOT) will begin installing the overhead electronic signs on northbound Interstate 5, State Rout 520 and Interstate 90 between Seattle and Bellevue. The signs are a key component of the WSDOT Smarter Highways program, that uses real-time traffic information to improve safety and reduce congestion.
Skyline High School senior Jason Lu has been studying the traffic management systems in America and overseas. Here he discusses how real-time traffic information can improve highway capacity without expensive road building.
