The rate at which fatalities occurred in truck-involved crashes increased 9.4% in 2010 from the previous year’s all-time low, according to an analysis of Department of Transportation mileage data made public last week.

The rate at which fatalities occurred in highway accidents involving large trucks dropped to the lowest level on record, falling 14.1% in 2009 from the previous year, according to an analysis of Department of Transportation data by American Trucking Associations.