Interstate 90 near Mile Marker 221 to 110
We just got home from a vacation trip to the Pacific Northwest and this area on I-90 had the most aggressive speed enforcement we saw in 5,000 miles of driving. Troopers were all over, mostly in unmarked SUV’s. We set cruise control right on 70 mph. Another vehicle with out of state plates passed us going about 10 over and was pulled over by the cops in short order. Advise setting your cruise control throughout Washington state, as it has some of the strictest enforcement of any state west of the Mississippi. We did, and had a nice ticket-free vacation.