Heading down the mountain or large hill before you get to Sheridan exit, heading towards Montana. My expierence fits what someone else said here. I am from out of state. I told the officer I was not speeding and I had my cruise control on, set at under 70 mph. The speed limit was 75. I then slowed down to under 65, because that was the speed limit at the construction zone. I also rember someone passing me on the right lane, because I was driving in the left lane. He did not get pulled over, but I did. I do believe the real speeder was from Wyoming. I live 1,100 miles from here. It will cost more to show up in court for a case I might loose. I am shocked.