Figure 7. Fatalities in Combination Truck, Single-Unit Truck, and Passenger Vehicle Crashes
per 100 Million Vehicle Miles Traveled, 1975-2007

Bar graph: Fatalities in combination truck crashes per 100 million vehicle miles traveled, fatalities in single-unit truck crashes per 100 million vehicle miles traveled, and fatalities in passenger vehicle crashes per 100 million vehicle miles traveled by year from 1975 through 2007. Data from Table 13 (combination trucks), Table 14 (single-unit trucks), and Table 2 (passenger vehicles).

Notes: A combination truck is defined as a truck tractor pulling any number of trailers (including none) or a straight truck pulling at least one trailer. A single-unit truck is defined as a medium or heavy truck in which the engine, cab, drive train, and cargo area are all on one chassis. A passenger vehicle is defined as a car or light truck (including pickups, vans, and sport utility vehicles).