Re: Speed Trap Requirements in Washington State
You must not have looked very hard. RCW 46.61.470 is titled "Speed traps defined, certain types permitted — Measured courses, speed measuring devices, timing from aircraft."
You will find it does NOT apply when radar or lidar is employed.
As far as the speed limit, RCW 46.61.400, which is probably what you were cited for, says that the maximum speed limit in any city or town is 25 -- unless the city or town changes it. Now that change must be based on an engineering and traffic survey.
However, if the survey is not valid or was not done, the speed limit SHOULD HAVE BEEN left at 25 -- thus, you would have been cited for 43 in a 25.
Where am I going? And why am I in this handbasket?