RCW 9.91.020: Operating railroad, steamboat, vehicle, etc., while intoxicated.

Every person who, being employed upon any railway, as engineer, motor operator, grip operator, conductor, switch tender, fire tender, bridge tender, flagger, or signal operator, or having charge of stations, starting, regulating, or running trains upon a railway, or being employed as captain, engineer, or other officer of a vessel propelled by steam, or being the driver of any animal or vehicle upon any public highway, street, or other public place, is intoxicated while engaged in the discharge of any such duties, shall be guilty of a gross misdemeanor.