Washington Revised Code Title 46. Motor Vehicles § 46.61.210. Operation of vehicles on approach of emergency vehicles or organ transport vehicles transporting a time urgent organ

(1) Upon the immediate approach of an authorized emergency vehicle, or organ transport vehicle transporting a time urgent organ as defined in RCW 68.64.010, making use of audible and visual signals meeting the requirements of RCW 46.37.190, or of a police vehicle properly and lawfully making use of an audible signal only the driver of every other vehicle shall yield the right-of-way and shall immediately drive to a position parallel to, and as close as possible to, the right-hand edge or curb of the roadway clear of any intersection and shall stop and remain in such position until the authorized emergency vehicle or organ transport vehicle has passed, except when otherwise directed by a police officer.

(2) This section shall not operate to relieve the driver of an authorized emergency vehicle or organ transport vehicle from the duty to drive with due regard for the safety of all persons using the highway. To the greatest extent practicable, organ transport services as defined in RCW 18.73.030 shall notify the state patrol when an organ transport vehicle is operating under the provisions of this section.