Lingberg road between Northwestern Ave. and McCormick Road, usually by the intersection of the biking/running trail. The limit is posted at 30 mph on a road wide enough for 2 lanes both ways with very few possible turns. The limit should be 40 mph at least. The road is hilly so cops like to sit at the bottom of it and clock people as they go over the top of the hill so they have no chance to see the cop and slow down.