The Washington State Department of Transportation (WSDOT) and local authorities are authorized to designate any portion of a roadway under their respective jurisdictions for the exclusive or preferential use of:
The following private transportation provider vehicles may qualify for exclusive or preferential use of these roadways:
Regulations authorizing preferential use of a highway facility may be in effect at all times, at specified times of day, or on specified days.
Transit-only lanes that allow other vehicles to access abutting businesses may not be authorized for the use of private transportation provider vehicles. Local authorities are encouraged to establish a process for private transportation providers to apply for the use of limited access facilities that are reserved for the exclusive or preferential use of public transportation vehicles.
"Private employer transportation service" is defined as a regularly scheduled, fixed-route transportation service that is similarly marked or identified to display the business name or logo on the driver and passenger sides of the vehicle, meets the annual certification requirements of the WSDOT, and is offered by an employer for the benefit of its employees.
Counties with a population greater than two million people may authorize private employer transportation services to use designated transit-only lanes if the county has established a process for applying to do so.