Turner-Fairbank Highway Research Center

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The Magnitude and Severity of Passing Accidents on Two-Lane Rural Roads

Product Type

HSIS Summary Report





Crashes involving passing maneuvers are an important safety issue on two-lane rural roads. HSIS data from 3 states were used in this study. Passing crashes comprised 1.3 percent of all crashes on two-lane roads, and 2.0 percent of all crashes on two-lane rural roads. Passing crashes were somewhat more severe than non-passing crashes. In two of the states, only 6.4 to 6.7 percent of passing crashes were head-on; the third state did not list head-on as a separate crash type.

Link To HSIS Summary Report

The Magnitude and Severity of Passing Accidents on Two-Lane Rural Roads


Passing crashes
Crash severity
Two-lane roads
Rural roads

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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.

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Research Reports

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

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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.

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Safety Analysis Tools

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

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