Citation

Khasnabis S, Atabak A. Transp. Res. Rec. 1980; 753: 9-14.

Copyright

(Copyright © 1980, Transportation Research Board, National Research Council, National Academy of Sciences USA, Publisher SAGE Publishing)

DOI

unavailable

PMID

unavailable

Abstract

A two-stage study was undertaken to analyze historical accident data for trucks versus all other motorized vehicles in the state of Michigan. In the first stage, a comparison of accident data categorized into three groups of severity and corrected for exposure factors was made between trucks and all other vehicles. In the second stage, truck accident data were further classified into three categories: pickups panels, and vans (PPVs); straight trucks (dumps, stakes, etc.); and truck tractors. Separate comparisons were made between each truck category and all other vehicles and among the truck categories themselves. The conclusions of the first-stage analysis were that, for fatal and property- damage accidents, trucks had a higher accident rate than did all other vehicles; for injury accidents, trucks had a lower rate; and for all accidents together, there is no significant difference among the accident rates. The second-stage analysis indicated that, in almost all accident categories, PPVs and straight trucks had a higher accident rate than did all other vehicles, whereas truck tractors had a higher rate for fatal accidents only. In all other categories of severity, truck tractors had a lower rate than did all other vehicles. Further, a comparison of accident rates among the three truck categories indicated that straight trucks had the highest accident record, followed by PPVs and truck tractors. Truck tractors, however, had a higher fatal-accident rate than did PPVs.