RCW 81.28.280: Reports of wrecks, etc.

Every public service company shall give immediate notice to the commission of every accident resulting in death or injury to any person occurring on its lines or system, in such manner as the commission may prescribe.

Such notice shall not be admitted as evidence or used for any purpose against the company giving it in any action for damages growing out of any matter mentioned in the notice. The commission may require reports to be made by any common carrier of all wrecks, collisions, or derailments occurring on its line.