Wash. Rev. Code § 46.52.080
All required accident reports and supplemental reports and copies thereof shall be without prejudice to the individual so reporting and shall be for the confidential use of the county prosecuting attorney and chief of police or county sheriff, as the case may be, and the director of licensing and the chief of the Washington state patrol, and other officer or commission as authorized by law, except that any such officer shall disclose the names and addresses of persons reported as involved in an accident or as witnesses thereto, the vehicle license plate numbers and descriptions of vehicles involved, and the date, time and location of an accident, to any person who may have a proper interest therein, including the driver or drivers involved, or the legal guardian thereof, the parent of a minor driver, any person injured therein, the owner of vehicles or property damaged thereby, or any authorized representative of such an interested party, or the attorney or insurer thereof. No such accident report or copy thereof shall be used as evidence in any trial, civil or criminal, arising out of an accident, except that any officer above named for receiving accident reports shall furnish, upon demand of any person who has, or who claims to have, made such a report, or, upon demand of any court, a certificate showing that a specified accident report has or has not been made to the chief of the Washington state patrol solely to prove a compliance or a failure to comply with the requirement that such a report be made in the manner required by law: PROVIDED, That the reports may be used as evidence when necessary to prosecute charges filed in connection with a violation of RCW 46.52.088.
RCW 46.52.080
Severability-1975 c 62: See note following RCW 36.75.010.