1. Traffic Safety Culture Index;AAA Foundation for Traffic Safety,2010
2. Red-Light Cameras for the Prevention of Road Traffic Crashes;Aeron-Thomas,2005
3. Fatal Crash Involvements – What are the Odds?;Cerrelli,1997
4. Safety Evaluation of Red-Light Cameras;Council,2005
5. Roundabouts: An Informational Guide;Federal Highway Administration,2000