The commission is vested with power and authority, and it is its duty to supervise and regulate every auto transportation company in this state as provided in this section. Under this authority, it shall for each auto transportation company:
The commission may, at any time, by its order duly entered after notice to the holder of any certificate under this chapter, and an opportunity for a hearing, at which it shall be proven that the holder willfully violates or refuses to observe any of the commission's proper orders, rules, or regulations, suspend, revoke, alter, or amend any certificate issued under the provisions of this chapter, but the holder of the certificate has all the rights of rehearing, review, and appeal as to the order of the commission as is provided for in chapter 34.05 RCW.
RCW 81.68.030