The Active Transportation Alliance surveyed driver behavior at 52 marked and unmarked crossing locations around Chicago and in neighboring suburbs to better understand the relationship between compliance with the state law requiring motorists to stop for pedestrians in crosswalks and crosswalk type or design. The study involved crosswalks with no pavement markings, crosswalks delineated by traditional pavement markings (two striped lines defining the crosswalk), and crosswalks with additional safety features such as in-road "stop for pedestrians" signs, textured or colored surfaces, raised crosswalks, or flashing beacons. The survey found that compliance was lowest at unmarked crosswalks, where only 5 percent of motorists stopped for pedestrians. Eighteen percent of drivers stopped for pedestrians at traditional painted crosswalks. Compliance was highest at the crosswalks enhanced with other safety features, where 61 percent of motorists stopped for pedestrians.