Project Info

I-90 - Snoqualmie Pass Vicinity - Improve Delineation - Complete September 2014

This pilot project tests more than 4,600 solar-powered Light-Emitting Diodes along a five mile stretch of I-90. The LED’s are installed along the shoulders, on the barriers and in the lanes from Denny Creek to the Snoqualmie Pass summit in both the eastbound and westbound lanes.


How you benefit

Improves safety
The LED's may reduce the risk of collisions in low light conditions on Snoqualmie Pass by 20 percent.


Contact us
Meagan Lott, WSDOT communications

Vicinity map of solar-powered LED lane markings.
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Image of solar-powered LED lane markings.
Crews installed solar-powered LED lane markers on I-90 to define lanes and shoulders.