“…Based on the results of empirical studies, effective methods include increased enforcement (Dumbaugh and Frank, 2007;Cedar Rapids, 2006), appropriate speed zone settings (Day, 2007;McCoy and Heimann, 1990), visual placement of school buildings and play equipment (Clifton and Kreamer-Fults, 2007), and speed monitoring devices (Ash, 2006;Lee et al, 2006;Cedar Rapids, 2006). Traffic engineers and city planners have utilized a variety of school zone signage in an attempt to improve compliance.…”