WSDOT
Seattle Introduces Speed Limit Signs That Change Depending on Traffic
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Here’s a novel idea: Seattle have started posting different speed limit signs along I-5 now, depending on traffic volume. Dubbed the Smarter Highways project and brought to you by the Washington State Department of Transportation (WSDOT), these new signs serve multi purposes: to relieve congestion; to indicate when motorists should merge; or when a lane…






