Motorcycles and motor-driven cycles—Additional requirements and limitations.
1977 ex.s. c 355 s 53.
Every motorcycle and every motor-driven cycle shall also comply with the requirements and limitations of:
RCW 46.37.380 on horns and warning devices;
RCW 46.37.390 on mufflers and prevention of noise;
RCW 46.37.400 on mirrors; and
RCW 46.37.420 on tires.
Official source: Washington State Legislature. Reproduced from public-domain Washington statutes; confirm against the official source for the current text. Not legal advice.