A couple of miles before you reach Tucumcari, travelling east-bound, there is a long downhill slope. At the bottom of the hill the road rises slightly over a small crest before dipping to a bridge. State trooper parks in the median by the bridge, hidden behind the crest. Detector will often pick up a signal at the top of the hill but it will disappear as you get down into the radar "shadow" of the little crest. Don’t be tempted to think the threat has gone!