As used in this title, unless specially defined otherwise or unless the context indicates otherwise:
(1) "Commission" means the utilities and transportation commission.
(2) "Commissioner" means one of the members of such commission.
(3) "Corporation" includes a corporation, company, association, or joint stock association.
(4) "Low-level radioactive waste site operating company" includes every corporation, company, association, joint stock association, partnership, and person, their lessees, trustees, or receivers appointed by any court whatsoever, owning, operating, controlling, or managing a low-level radioactive waste disposal site or sites located within the state of Washington.
(5) "Low-level radioactive waste" means low-level waste as defined by RCW
70A.380.010.
(6) "Person" includes an individual, a firm, or copartnership.
(7) "Street railroad" includes every railroad by whatsoever power operated, or any extension or extensions, branch or branches thereof, for public use in the conveyance of persons or property for hire, being mainly upon, along, above, or below any street, avenue, road, highway, bridge, or public place within any one city or town, and includes all equipment, switches, spurs, tracks, bridges, right of trackage, subways, tunnels, stations, terminals, and terminal facilities of every kind used, operated, controlled, or owned by or in connection with any such street railroad, within this state.
(8) "Street railroad company" includes every corporation, company, association, joint stock association, partnership, and person, their lessees, trustees, or receivers appointed by any court whatsoever, and every city or town, owning, controlling, operating, or managing any street railroad or any cars or other equipment used thereon or in connection therewith within this state.
(9) "Railroad" includes every railroad, other than street railroad, by whatsoever power operated for public use in the conveyance of persons or property for hire, with all facilities and equipment, used, operated, controlled, or owned by or in connection with any such railroad.
(10) "Railroad company" includes every corporation, company, association, joint stock association, partnership, or person, their lessees, trustees, or receivers appointed by any court whatsoever, owning, operating, controlling, or managing any railroad or any cars or other equipment used thereon or in connection therewith within this state.
(11) "Common carrier" includes all railroads, railroad companies, street railroads, street railroad companies, commercial ferries, motor freight carriers, auto transportation companies, charter party carriers and excursion service carriers, private nonprofit transportation providers, solid waste collection companies, household goods carriers, hazardous liquid pipeline companies, and every corporation, company, association, joint stock association, partnership, and person, their lessees, trustees, or receivers appointed by any court whatsoever, and every city or town, owning, operating, managing, or controlling any such agency for public use in the conveyance of persons or property for hire within this state.
(12) "Vessel" includes every species of watercraft, by whatsoever power operated, for public use in the conveyance of persons or property for hire over and upon the waters within this state, excepting all towboats, tugs, scows, barges, and lighters, and excepting rowboats and sailing boats under twenty gross tons burden, open steam launches of five tons gross and under, and vessels under five tons gross propelled by gas, fluid, naphtha, or electric motors.
(13) "Commercial ferry" includes every corporation, company, association, joint stock association, partnership, and person, their lessees, trustees, or receivers, appointed by any court whatsoever, owning, controlling, leasing, operating, or managing any vessel over and upon the waters of this state.
(14) "Transportation of property" includes any service in connection with the receiving, delivery, elevation, transfer in transit, ventilation, refrigeration, icing, storage, and handling of the property transported, and the transmission of credit.
(15) "Transportation of persons" includes any service in connection with the receiving, carriage, and delivery of persons transported and their baggage and all facilities used, or necessary to be used in connection with the safety, comfort, and convenience of persons transported.
(16) "Public service company" includes every common carrier.
(17) The term "service" is used in this title in its broadest and most inclusive sense.