Highway Safety Information System Guidebook for the Illinois Data Files

The Highway Safety Information System (HSIS) is a roadway-based system that provides quality data on a large number of crash, roadway, and traffic variables. The system comprises data collected by States for managing the highway system and studying highway safety. HSIS is composed of seven States and one urban center: California, Illinois, Ohio, Maine, Minnesota, North Carolina, Washington, and Charlotte, NC. HSIS includes some agencies’ highway intersection, interchange, lighting, and curve/grade data. Additional supplementary information includes vulnerable road user infrastructure data, such as sidewalks, greenways, and transit stops. This guidebook is part of a series of data guidebooks for each HSIS agency that explain the variables and attributes provided by each agency. Each guidebook describes the agency’s data system and presents an alphabetized listing of all available variables. All data are derived from police-reported crash records, maintained highway records, and other supplementary inventories. This guidebook supports the use of Illinois HSIS data from 2018 and beyond. Data and documentation recorded before 2018 (1985–2017) are available on request from the virtual HSIS Laboratory.

• Record URL:
  • https://doi.org/10.21949/1521562
• Record URL:
  • https://highways.dot.gov/sites/fhwa.dot.gov/files/FHWA-HRT-24-114.pdf
• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/77338
• Corporate Authors:

  VHB

  940 Main Campus Drive
  Raleigh, NC  United States  27606

  Federal Highway Administration

  Office of Safety and Operations
  Research and Development
  McLean, VA  United States  22101
• Authors:
  • Porter, R J
  • 0000-0001-8535-3451
  • Hamilton, Ian
  • 0000-0003-0949-5495
  • Chestnutt, Catherine
  • 0009-0000-0494-7224
  • Kersavage, Kristin
  • 0000-0002-3601-7766
  • Cohen, Tal
  • 0000-0001-9993-8274
• Publication Date: 2024-8

Language

• English

Media Info

• Media Type: Digital/other
• Features: Appendices; Figures; References; Tables;
• Pagination: 120p

Subject/Index Terms

• TRT Terms: Crash data; Data analysis; Handbooks; Highway safety; Traffic data
• Identifier Terms: Highway Safety Information System
• Geographic Terms: Illinois
• Subject Areas: Data and Information Technology; Highways; Safety and Human Factors;

Filing Info

• Accession Number: 01929744
• Record Type: Publication
• Report/Paper Numbers: FHWA-HRT-24-114
• Contract Numbers: 693JJ322D000004; 693JJ322F00320N
• Files: NTL, TRIS, USDOT
• Created Date: Sep 6 2024 4:58PM