Detailed guidebooks for each HSIS State are available to HSIS users. The purpose of the guidebooks is to provide sufficient
information for both the analyst and the programmer to effectively use the system. The guidebooks document data quality issues uncovered through annual
quality control checks or reported by system users.
The guidebook for each State contains a basic description of the State data
system, an alphabetized listing (by file type) of all available variables,
detailed definitions of each category present within each variable, and notes
on the quality of the variable. The guidebooks are updated on a two-three year
cycle or as significant changes occur. (Note that in the past, HSIS also published
a “Volume II” containing single-variable tabulations for a large
number of "key" variables within each of the files across five years.
Based on a user survey, Volume II is no longer published. However, for users
needing information on sample sizes across years, custom-designed tables
will be prepared by HSIS staff on request.)
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HSIS Guidebook for California State Data Files
Volume I: SAS File Formats
August 2007 — FHWA-RD-00-137
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HSIS Guidebook for Illinois State Data Files
Volume I: SAS File Formats
January 2005
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HSIS Guidebook for Maine State Data Files
Volume I: SAS File Formats
October 2006
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HSIS Guidebook for Michigan State Data Files
Volume I: SAS File Formats
January 2001 — FHWA-RD-01-118
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HSIS Guidebook for Minnesota State Data Files
Volume I: SAS File Formats
August 2007 — FHWA-RD-01-058
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HSIS Guidebook for North Carolina State Data Files
Volume I: SAS File Formats
January 2006
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HSIS Guidebook for Ohio State Data Files
Volume I: SAS File Formats
August 2007
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HSIS Guidebook for Utah State Data Files
Volume I: SAS File Formats
March 2000 -- FHWA-RD-01-056
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HSIS Guidebook for Washington State Data Files
Volume I: SAS File Formats
April 2006