Yes, here's the statute. http://apps.leg.wa.gov/RCW/default.aspx?cite=46.61.425
It makes sense, so that one can clear the lane of oncoming traffic faster.
RCW 46.61.425
Minimum speed regulation — Passing slow moving vehicle.
(1) No person shall drive a motor vehicle at such a slow...
I was driving in NY State and in a legal passing area, I passed two vehicles on the left. They sped up as I was passing them. In order to pass them, I had to exceed the speed limit of 55 mph. As soon as I returned to the right lane, I slowed down to the proper speed. I was pulled over and given...