Unauthorized vehicles may be impounded by a registered tow truck operator (RTTO) at the direction of a law enforcement officer or other public official with jurisdiction, if the vehicle is on public property, or at the direction of the property owner or an agent. A vehicle is deemed unauthorized if it is left unattended in certain public or private locations. A vehicle is considered an unauthorized vehicle subject to immediate removal if it is:
The city of Seattle is the only city in Washington with a population greater than 700,000.
A streetcar is legally defined as a vehicle other than a train for transporting persons or property and operated upon stationary rails principally within cities and towns.
A vehicle is considered an unauthorized vehicle subject to immediate removal by an RTTO if it is left unattended within a right-of-way used by a city with a population greater than 700,000 for streetcar operations, when the vehicle obstructs the operation of a streetcar vehicle or jeopardizes public safety. An authorized representative of the city may request an impound for this type of unauthorized vehicle.