Except when a port district regulates limousine carriers under RCW
46.72A.030 or a city with a population of five hundred thousand or more is authorized under RCW
46.72A.150 to enforce state laws or rules applicable to limousine carriers, limousines, and chauffeurs, subject to the limitations set forth in RCW
46.72A.150, the state of Washington fully occupies and preempts the entire field of regulation over limousine carriers as regulated by this chapter. Cities, towns, and counties or other municipalities may enact only those laws and ordinances relating to limousine carriers that are consistent with this chapter.