Wash. Rev. Code § 81.68.015
This chapter does not apply to corporations or persons, their lessees, trustees, receivers, or trustees appointed by any court whatsoever insofar as they own, control, operate, or manage taxicabs, hotel buses, school buses, or any other carrier that does not come within the term "auto transportation company" as defined in RCW 81.68.010.
This chapter does not apply to persons operating motor vehicles when operated wholly within the limits of incorporated cities or towns, and for a distance not exceeding three road miles beyond the corporate limits of the city or town in Washington in which the original starting point of the vehicle is located, and which operation either alone or in conjunction with another vehicle or vehicles is not a part of any journey beyond the three-mile limit.
This chapter does not apply to commuter ride sharing or ride sharing for persons with special transportation needs in accordance with RCW 46.74.010, so long as the ride-sharing operation does not compete with or infringe upon comparable service actually being provided before the initiation of the ride-sharing operation by an existing auto transportation company certificated under this chapter.
This chapter does not apply to a service carrying passengers for compensation over any public highway in this state between fixed termini or over a regular route if the commission finds, with or without a hearing, that the service does not serve an essential transportation purpose, is solely for recreation, and would not adversely affect the operations of the holder of a certificate under this chapter, and that exemption from this chapter is otherwise in the public interest. Companies providing these services must, however, obtain a permit under chapter 81.70 RCW.
This chapter does not apply to a service carrying passengers for compensation over any public highway in this state between fixed termini or over a regular route if the commission finds, with or without a hearing, that the service is provided pursuant to a contract with a state agency, or funded by a grant issued by the department of transportation, and that exemption from this chapter is otherwise in the public interest. Companies providing these services must, however, obtain a permit under chapter 81.70 RCW.
RCW 81.68.015