Wash. Rev. Code § 47.04.240
The department, a county, city, town, any other public entity, and any private entity under the public-private transportation initiatives authorized under chapter 47.46 RCW, that provides transit, high-speed ground transportation, high capacity transportation service, ferry service, toll facilities, or other public transportation service or facilities may only use personally identifiable information obtained from the use of electronic toll payments, transit passes, or other fare media such as magnetic strip cards or stored value cards for billing purposes. This information may not be used to track or monitor individual use of the public transportation facilities or service, except for billing purposes and to provide statistical compilations and reports that do not identify an individual.
RCW 47.04.240
Public records: Chapter 42.56 RCW.