No flare, fusee, electric lantern, or cloth warning flag may be used for the purpose of compliance with this section unless such equipment is of a type which has been submitted to the state patrol and conforms to rules adopted by it. No portable reflector unit may be used for the purpose of compliance with the requirements of this section unless it is so designed and constructed as to be capable of reflecting red light clearly visible from all distances within six hundred feet to one hundred feet under normal atmospheric conditions at night when directly in front of lawful upper beams of head lamps, and unless it is of a type which has been submitted to the state patrol and conforms to rules adopted by it;
RCW 46.37.440
Construction-Application of rules-Severability-1987 c 330: See notes following RCW 28B.12.050.
Severability-1977 ex.s. c 355: See note following RCW 46.37.010.