1. National Highway Traffic Safety Administration 2015 Traffic safety facts: 2013 data https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/812200
2. World Health Organization 2015 Global Status Report on Road Safety 2015 http://www.who.int/violence_injury_prevention/road_safety_status/2015/en/
3. World Health Organization 2013 Global Status Report on Road Safety 2013: Supporting a Decade of Action http://www.who.int/violence_injury_prevention/road_safety_status/2013/en/
4. Insurance Information Institute 2015 Self-Driving Cars and Insurance http://www.iii.org/issue-update/self-driving-cars-and-insurance
5. National Highway Traffic Safety Administration 2014 Traffic Safety Facts 2012: A Compilation of Motor Vehicle Crash Data from the Fatality Analysis Reporting System and the General Estimates System https://crashstats.nhtsa.dot.gov/Api/Public/ViewPublication/812032