Washington Demonstration Project: LED Lane Delineation and High Visibility Barrier Delineation for I-90 through Snoqualmie Pass in King and Kittitas Counties, WA
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2015-07-01
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By Lee, Hyung
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Edition:Final Technical Brief
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Abstract:As a part of the HfL initiative, FHWA provided an approximately $180,000 grant to the Washington State Department of Transportation (WSDOT) to improve pavement visibility along I-90 through Snoqualmie Pass in King and Kittitas Counties. The key innovations on this project included the installation of light-emitting diode (LED) lane delineators and high-visibility barrier delineators. Although these delineators have been used in other States (e.g., Oregon, New York, California, and Colorado) as well as for small projects in the State of Washington, this is WSDOT’s first pilot project that utilizes them on a large scale. WSDOT plans to monitor this pilot program for the next 3 years to determine if the LED lights are effective. Maintaining delineation for I-90 in the Snoqualmie Pass vicinity has been a challenge for WSDOT, and it is anticipated that the new LED lights installed for this project will provide more durable and reliable delineation, giving drivers a more positive delineation especially at night and during severe weather conditions
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