Washington Revised Code Title 81. Transportation § 81.04.060. Deposition--Service of process

The commission shall have the right to take the testimony of any witness by deposition, and for that purpose the attendance of witnesses and the production of books, waybills, documents, papers and accounts may be enforced in the same manner as in the case of hearings before the commission, or any member thereof. Process issued under the provisions of this chapter shall be served as in civil cases.