There are state patrol officers routinely on the sides of the roads on either side shooting radar/laser. They commonly park on one side of the road next to a median u-turn and shoot the traffic coming towards them on the other side of the freeway. You think that since the cop is on the other side your ok. Your not. Also they routinely use unmarked cars in addition to slightly marked cars for pacing. The cars they use are late model Impala’s (gold/brown,blue) and late Model Crown vic’s (Maroon,blue). I was pulled over by an unmarked brown Yukon a couple years back. The common elements between these umarked cars are that they have dark (illegal for us citizens) window tint on all the windows. Plates are civilian on some and no antennas or push bars on some. Also they are almost always very clean which tends to stand out among the mud/dirt splattered cars of the northwest.