The signs post variable speed limits that help warn drivers of backups ahead and smooth out traffic as it approaches a lane blocking incident. The overhead signs can also quickly close entire lanes and provide warning information to drivers before they reach slower traffic.
This advance notification and variable speed limits helps reduce collisions that cause backups and stop-and-go traffic. The new system will make I-5 safer and help us better manage and clear blocking incidents.
The I-5 Active Traffic Management Project helps make the busiest portion of I-5 in Washington state safer by reducing the numbers of congestion-related collisions, such as side-swipe or rear-end collisions.
Active traffic management tools have proven effective at reducing collisions and improving traffic flow in Europe. This technology has resulted in several benefits including a 30 percent reduction in injury collisions and a 22 percent increase in roadway capacity.
Partnerships & Cooperation
This project is funded as part of the Alaskan Way Viaduct and Seawall Replacement Project.
|Financial Data for PIN 809936F
||Amount ($ in thousands)
|2003 Gas Tax (Nickel Funding)
|2005 Gas Tax (TPA)
|Pre-Existing Funds (PEF)
The I-5 Active Traffic Management project is funded as part of WSDOT's Alaskan Way Viaduct and Seawall Replacement project.
Jennifer Charlebois, P.E.
WSDOT Project Engineer
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