The Speed trap is usually for those traveling East bound toward Moses Lake. As your coming down the hill over looking all of Moses Lake, the Hiawatha Exit is at the bottom of the hill and as you come out of the hill and pass the exit, An officer hide on the On ramp radaring people. There is a U turn shortly after the onramp where he will radar from the west bound side of I 90 and then use the U turn to catch you since there is usually a barrier most of the way.