Between 2001 and 2013, 3,380 American citizens died due to terrorism at home or abroad, the great majority in the September 11 attacks.13 Over that same period a shade over 501,000 people died on US roads, or the cumulative terrorism total roughly every month.14 One much-quoted study suggested that the decision of many US travelers to switch from air travel to driving in the wake of September 11 brought about around 1,500 additional road deaths.15
