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                HSIS Guidebook - Washington
WA_HSIS_Guidebook.pdf (795.89 KB)
      
  Publication Information
                  Publication Type:Handbook
                      Abstract:The Highway Safety Information System (HSIS), established in 1987, is a foundational highway research data system. The State of Washington has participated in the HSIS program since 1993, providing quality data to HSIS for use by researchers through a request system. In 2021, HSIS began a modernization effort with the goal of expanding the technological and analytic capabilities of the data system. This modernization provides an increased emphasis on spatial analysis and cloud-based data management.

This guidebook is intended to support the use of Washington State HSIS data for the years 2018 and beyond. Data and documentation prior to 2018 (1993-2017) are available upon request to the HSIS Virtual Laboratory. Prior to 2018, the Washington State datasets included variables for the following files:

Roadway inventory.
	Horizontal curve inventory.
	Vertical grade.
	Intersection inventory (2004-2009).
	Accident characteristics.
	Vehicles involved in crashes.
	Vehicle occupants involved in crashes.The revised Washington State database incorporated into HSIS contains six different files:

Roadway inventory (including traffic information).
	Horizontal curve inventory.
	Vertical grade.
	Crash characteristics.
	Units involved in crashes.
	Persons involved in the crash
              Publishing Date:December 2022
                                                  FHWA Program(s):Research
              Safety
              AMRP Program(s):Safety Data and Analysis
              FHWA Activities:Highway Safety Information System
              Subject Area:Safety and Human Factors U.S. DEPARTMENT OF TRANSPORTATION

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