1. Cabinet Office (2009). White Paper on Traffic Safety. Cabinet Office.
2. European Enhanced Vehicle-safety Committee (1998). Improved Test Methods to Evaluate Pedestrian Protection Afforded by Passenger Cars. EEVC Working Group 17 Draft Report.
3. Institute for Traffic Accident Research and Data Analysis of Japan (ITARDA) (2013). Annual Traffic Accident Report in 2012. Tokyo (in Japanese).
4. Institute for Traffic Accident Research and Data Analysis of Japan (ITARDA) (2010). Annual Traffic Accident Report in 2009. Tokyo (in Japanese, full version).
5. Institute for Traffic Accident Research and Data Analysis of Japan (ITARDA) (1995). ITARDA Information No.4. (in Japanese).