Superior Court Rules That Traffic Stop Was Unlawful. A King County Superior Court judge ruled that a Washington State Patrol trooper's traffic stop was unlawful where he observed the client's vehicle cross a fog-line by half a tire-width for two seconds. This observation of driving, without more, did not create legal cause to seize and detain the client. The trial court judge did not commit legal error in dismissing a DUI charge based on this illegal traffic stop..