Adopted: February 5, 1990

SAFETY STUDY
Adopted: February 5, 1990
FATIGUE, ALCOHOL, OTHER DRUGS, AND MEDICAL FACTORS
IN FATAL-TO-THE-DRIVER HEAVY TRUCK CRASHES
VOLUME 2

NTSB Number: SS-90/02
NTIS Number: PB90-917003

SYNOPSIS
This report is an analysis of human factors involvement in fatal-to-the-driver , heavy truck accidents in eight States over a 1-year period, October 1, 1987 through September 30, 1988. Data presented are derived from in-depth investigation of 182 accidents which involved 186 heavy trucks and resulted in 207 fatalities. The accident investigations were conducted in California, Colorado, Georgia, Maryland, New Jersey, North Carolina, Tennessee and Wisconsin. These accidents represent approximately 25 percent of this type of accident nationwide. Volume 1 (NTSB/SS-90/01) of the study includes an analysis of fatigue, alcohol and other drug prevalence and medical factors in these accidents, presents findings and makes recommendations to improve heavy truck safety. Volume 2 (NTSB/SS-90/02) contains the 182 case summaries that provided the data discussed in Volume 1.