Turner-Fairbank Highway Research Center

« back to the list

Investigation of Passing Accidents Using the HSIS Data Base

Product Type

Journal Article


Yusuf M. Mohamedshah



Full citation

Yusuf M. Mohamedshah. Investigation of Passing Accidents Using the HSIS Data Base, Public Roads, Office of Research and Development, Federal Highway Administration, U.S.Department of Transportation, Washington D.C., Autumn 1992.


An assesssment was made of the magnitude of the passing accident problem in two states from 1985 to 1989 on 2-lane rural roads and 2-lane rural and urban roads, the study results were compared with those from a previous study (of one State). The study was conducted using the Federal Highway Administration's Highway Safety Information System data base. The study methodology is described, and the results are tabulated. It was found that the total number of passing accidents with respect to all accidents is in the range of 2 % to 3 % for the 3 States studied. This indicates that passing accidents do not appear to be a significant problem. The severity of passing accidents is slightly higher than the severity of nonpassing accidents for the States studied. Although there are some differences in injury severity among the States, the total percentages of injury accidents are similar. These and other findings are discussed.

Available From

Public Roads

Link To Journal Article

Link not available.


Passing crashes
Crash severity
Two-lane roads
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