1. Ellis , R. Van Houten , R. Kim , J. L. 2007
2. Federal Highway Administration 2009 Manual on uniform traffic control devices
3. Safety effectiveness of HAWK pedestrian treatment;Fitzpatrick;Transportation Research Record,2009
4. Hunter , W. W. Stutts , J. C. Pein , W. E. Cox , C. L. 1996 Pedestrian bicycle crash types of the early 1990's
5. Reducing conflicts between motor vehicles and pedestrians: The separate and combined effects of pavement markings and a sign prompt;Huybers;Journal of Applied Behavior Analysis,2004