Fig. 1.

Time series for traffic volume, traffic accidents, and terror fatalities in Israel from January 1, 2001, to June 22, 2002. (a) As measured on the Ayalon Freeway by the Ayalon Freeway Management Company. Traffic volume is a measure of the average flow of vehicles per hour. Peak traffic hours refer to traffic between 5 a.m. to 10 a.m. and 3 p.m. to 8 p.m. Off-peak traffic hours refer to 10 a.m. to 3 p.m. and from 8 p.m. to 5 a.m. (b-d) All three accident categories refer to the number of persons injured or killed in automobile-related accidents. Light accident injuries refer to injuries that require no more than 24 h of hospitalization. Serious accident injuries refer to those requiring >24 h of hospitalization. (e) Terror fatalities defined as terror events within Israel (excluding West Bank and Gaza) with at least one Israeli fatality. The dashed line marks particularly large terror attacks with 10 or more fatalities.