Haven't been pulled over yet *knock on wood*
In WA you are legally required to keep up with the pace of traffic. So if everyone is doing 70 in a 60, you better keep up. They will pull you over for going too slow, or being in the wrong lane. But unfortunately I don't see enough of that.
I remember Delmarco or someone had a thread where they were pulled over and the cop had been trained to clock you by eye. I bet his opinion would hold up in court and you could still get a ticket. The only problem is how much to ticket you for because he doesn't know EXACTLY how fast you were going.