Speed Cameras in Washington?

I was driving in Renton Washington today and my 9500ix alerted me to a "Speed Camera" but the sign indicated it was a stop light camera.

Are there any speed cameras in Washington state? I didn't think there were. The sign indicated it was a stop light camera. Was it just mis tagged in the 9500ix database? I'm thinking of turning speed camera alert off as I already have turned red light cameras off since I never run a red light and if there are no speed cameras being used in the state then no point.

There are speed cameras in some school zones, and allegedly the state got an ok to put them on roads where racing is common (think 167) I work in Renton and a few colleagues have gotten speeding tickets in the mail from cameras in a school zone.

I probably ran across that exact speed/RLC camera, right off of the 405. I didn't get a good look at it though, because it was dark. I did see someone get their picture snapped, as they tried to push a yellow light.

There are intersections all over the Phoenix area that have both RLCs and speed cameras on them. That's probably what you have up there in Washington.

Renton has speed-on-green cameras.