1. National Highway Traffic Safety Administration, Department of Transportation (US) (2012). Traffic safety facts: Older population. Tech. rep., National Highway Traffic Safety Administration.
2. National Highway Traffic Safety Adminstriation (2012). Older driver program five-year strategic plan. Tech. rep. December 2010, National Highway Traffic Safety Administration.
3. National Highway Traffic Safety Administration (2014). Traffic safety facts 2012 data. Tech. rep., National Highway Traffic Safety Administration.
4. European Commission (2015). Road safety in the European Union. Tech. rep.
5. Center for Accident Research & Road Safety (2012). State of the road: Older road users fact sheet, 2012. Tech. rep., June.