Retrieved 2014-12-12.CS1 maint: Archived copy as title (link) ↑ Statistics of Road Traffic Accidents in Europe and North America Published: January 2007 or Published: April 2007 Accessed 17 May 2017 ↑ Early Estimate of Motor Vehicle Traffic Fatalities in 2009 at crashstats.nhtsa.dot.gov Accessed 16 May 2017 ↑ Mumford, Lewis (1961) The City in History: Its Origins, Its Transformation, and Its Prospects.