Turner-Fairbank Highway Research Center

« back to the list

Truck Accident Models

Product Type

HSIS Summary Report





Two studies used HSIS data to create truck crash models. The Oak Ridge study developed models to relate truck crash involvement rates for three roadway types and for various geometric and traffic variables. The Grants for Research Fellowships Program (GRF) study developed truck crash models for Interstates and two-lane rural roads as a function of relevant geometric features. In the Oak Ridge study, Poisson regression models were derived for three roadway types: rural Interstates, urban Insterstates, and rural two-lane undivided arterials. Overall, Average Annual Daily Traffic (AADT) per lane and horizontal curvature were significant for all three roadway types. Vertical grade was significant only for rural Interstates. Shoulder width was significant for urban Interstates and rural two-lane undivided arterials. The GRF study found that trucks are more involved than other vehicles in four crash types (run-off-road, overturning, sideswipe, and single vehicle). Variables found to be significantly related to truck crash involvement rates on Interstates included AADT, truck volume, horizontal alignment, and vertical alignment. On rural two-lane roads, variables significantly related to truck crash rates included AADT, truck volume, shoulder width, and horizontal alignment.

Link To HSIS Summary Report

Truck Accident Models


Truck crashes
Statistical models
Interstate roads
Two-lane rural roads

« Back to the List

HSIS Summaries

HSIS Summary Reports are two to eight pages in length and include a brief description of the issue addressed, data used, methodology applied, significant results, and practical implications.

Read More

Research Reports

A variety of research studies have been performed using data from HSIS. Many of the final reports prepared are now available electronically.

Read More

Technical Summaries

Research reports are often summarized in executive summaries, technical briefs, or other abbreviated formats. Included here are those road safety summaries that involved research using HSIS data.

Read More

Safety Analysis Tools

In addition to conducting research, HSIS resources are also used to develop products that can be used by practitioners in the analysis of safety problems.

Read More

Other Projects

HSIS data are sometimes used in research studies that result in other types of finished products, such as dissertations, theses, and conference proceedings.

Read More