Right at the Ogden KS city limits, on 18Hwy heading towards Fort Riley. There is a section of wide, grassy median that is depressed and invisible to highway traffic until about 100yards. The speed limit drops rapidly from 65 to 55 to 45 to 30 about 150 yards apart. A cop car will sit in the grassy median clocking all the traffic passing into the various zones. Sometimes a second cop car will be waiting in the parking lot by the convenience store a couple blocks into the town to pull over cars the first cop tags as speeders. From time to time a speed trap camera will be set up by the sidewalk next to the convenience store as well. Ogden is notorious as having one of the highest number of traffic tickets given in the entire state of Kansas.