An Empirical Analysis of Fatality Rates for Large Truck–involved Crashes on Interstate Highways
large trucks, freight transportation, vehicle-mile travelled, ton-mileage, random parameters tobit model
Few studies have analyzed the impacts of freight movements (large truck) on crash rates. This study explores a novel application of a method to large truck movements, namely the random parameters tobit regression model, by examining crash rates (instead of frequencies) in truckmiles traveled and ton-miles of freight in the United States (US) as continuous censored variables. Using a nationwide crash database, the empirical results illustrate that the random-parameters tobit regression model provides an increase understanding of the factors determining large truck crash rates.
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Citation / Publisher Attribution
Presented at the 3rd International Conference on Road Safety and Simulation on September, 2011 in Indianapolis, IN.
Scholar Commons Citation
Islam, Mouyid B. and Hernandez, Salvador, "An Empirical Analysis of Fatality Rates for Large Truck–involved Crashes on Interstate Highways" (2011). CUTR Faculty and Staff Publications. 98.