In contrast to public concern over “killer trucks,” large truck fatality and accident rates are falling. Large truck occupant fatalities decreased 25% over the past 12 years, as safety belt use increased from less than 6% to 33%. But the fatality rate remains 75% higher than the rate for all vehicles, because the mass of a truck puts occupants in other vehicles at greater risk. Double trailer combinations are underrepresented in accidents, while bobtail tractors are overrepresented. Limited-access highways are 4 times safer for trucks than other highways, and daytime travel is 3 times safer than nighttime travel.