Index to HSIS Summary Reports

The Highway Safety Information Systems (HSIS) is a multi-State safety data base that contains accident, roadway inventory, and traffic volume data for a select group of States. The participating States -- California, Illinois, Maine, Michigan, Minnesota, North Carolina, Utah and Washington were selected based on the quality of their data, the range of data available, and their ability to merge data from the various files. The HSIS is used by FHWA staff, contractors, university researchers, and others to study current highway safety issues, direct research efforts, and evaluate the effectiveness of accident countermeasures.

The HSIS database is not available for download from this page. However, if a researcher is conducting safety research which is made available to the public and the research community through publication in a report or journal, he or she can request information on how to obtain data by calling Mr. Yusuf Mohamedshah at the HSIS laboratory (202-493-3464). Note that the full data files for the States cannot be provided because of agreements with the States. However, extracts of the files containing specific variables of interest for a given research project will be developed by HSIS staff for the user. A data request form will be provided to the user to define the specific request. Additional information about the Highway Safety Information System, including useful tools that have been developed, will be made available via internet through the revised HSIS Web page which is currently under construction.

Please Note: We are dedicated to providing alternative formats of our publications for people with disabilities.

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Summary Reports

Accident Analysis of Older Drivers on Freeways
August 1996 -- FHWA-RD-035

Accident Analysis of Older Drivers at Intersections
February 1995 -- FHWA-RD-94-021

The Application of an Improved Accident Analysis Method for Highway Safety Evaluations
October 1994 -- FHWA-RD-94-082