Loading Video…
This browser does not support the Video element.
What is 'zipper merging?'
Long traffic jams in Washington seem like a normal part of life, but WSDOT says theres one way to help the problem if only a little.
This browser does not support the Video element.
Long traffic jams in Washington seem like a normal part of life, but WSDOT says theres one way to help the problem if only a little.