RCW 81.112.320

To accomplish any of the activities under RCW 81.112.300, a regional transit authority may create a public corporation, commission, or authority under RCW 35.21.730 through 35.21.755, and authorize the corporation, commission, or authority to provide any of the facilities and services that a regional transit authority may provide including any activities under RCW 81.112.300. A regional transit authority has all the powers, authorities, and rights granted to any city, town, or county or their agents under RCW 35.21.730 through 35.21.755 for the purposes of entering into and implementing transactions under RCW 81.112.300.