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Accident Report Detail

Multivehicle Work Zone Crash on Interstate 75

Executive Summary

​On June 25, 2015, about 7:10 p.m., a 2007 Peterbilt truck-tractor in combination with a 2005 Great Dane semitrailer, operated by Cool Runnings Express, Inc., was traveling northbound in the center lane of Interstate 75, near Chattanooga, Tennessee, when the driver did not respond to the slow-moving traffic ahead and collided with the rear of a 2010 Toyota Prius. Traffic had slowed near milepost 11.7 because of road construction and a work zone lane closure at milepost 12. The truck-tractor continued forward and collided with seven additional vehicles, forcing them into subsequent collisions. Of the 18 vehicle occupants, six died and four were injured. A postcrash fire consumed one vehicle. The truck driver’s trip began earlier that day, about 5:16 a.m., in Haines City, Florida. His destination was the carrier terminal in London, Kentucky.

Probable Cause

​The National Transportation Safety Board determines that the probable cause of the Chattanooga, Tennessee, crash was the truck driver’s failure to respond to the slow-moving traffic within a work zone because of performance decrements likely associated with his fatigue and methamphetamine use. Contributing to the crash was the failure of the pre-employment screening process to identify driver risk factors. Contributing to the severity of the crash was the truck-tractor’s high impact speed.

Accident Location: Chattanooga , TN USA  
Accident Date: 6/25/2015
Accident ID: HWY15MH009

Date Adopted: 10/17/2016
NTSB Number: HAR1601
NTIS Number: PB2016-104807