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 immediately considered an unauthorized vehicle and subject to removal if it is:
The City of Seattle is the only city in Washington with a population greater than 700,000.
A vehicle is considered an unauthorized vehicle and is 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, where the vehicle obstructs the operation of a streetcar vehicle or jeopardizes public safety. An authorized representative of a city with a population greater than 700,000 may request an impound for this type of unauthorized vehicle.