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IHSDM: Overview | FAQ | Modules | Library | Software Download | Technical Support | Training Course | Related Initiatives | Contacts



Resource List - September, 2013


Resource List - March 2015

PDF Version (389 KB)


A product of the Federal Highway Administration’s (FHWA's) Safety Research and Development Program, the Interactive Highway Safety Design Model (IHSDM) is a suite of safety analysis tools to evaluate the safety and operational effects of geo­metric-design decisions on highways. The following resources are available to individuals considering or using IHSDM:

  • IHSDM Public Software Web Site. The site, http://www.ihsdm.org, is where users can register for and download the latest release of IHSDM. It also provides access to IHSDM user documentation and information on IHSDM data requirements and technical support, summaries of selected IHSDM user applications/case studies, and IHSDM-related current events (e.g., Web conferences). 

  • IHSDM Research Web Site. The site, https://www.fhwa.dot.gov/research/tfhrc/projects/safety/comprehensive/ihsdm/index.cfm, provides an overview of and background information on IHSDM, including a library of the research reports upon which IHSDM’s analyti­cal procedures are based. It also provides a link to the IHSDM Public Software Web Site. 

  •  Highway Safety Manual Web Site. This site, http://www.highwaysafetymanual.org, provides information related to AASHTO’s Highway Safety Manual (HSM). The 1st Edition HSM consists of Parts A (Introduction and Fundamentals), B (Roadway Safety Management Process), C (Predictive Method) and D (Crash Modification Factors). The IHSDM Crash Prediction Module (CPM) is intended to be a faithful software implementation of HSM Part C, which includes crash prediction methodologies for two-lane rural highways, multilane rural highways, and urban/suburban arterials. Draft HSM Part C methods for freeways and ramps are also implemented in the IHSDM 2013 Release.

  •  Technical Support. A technical support staff with intimate knowledge of IHSDM is available to answer questions and pro­vide help to IHSDM users during normal business hours. Staff can be contacted two ways

  •  IHSDM Training Course. There are two training courses available: a 2-day onsite course and a Web-based course. At these coursed, participants learn about the key capabilities and limitations of IHSDM evaluations, evaluate highway using IHSDM software, and recognize when and how IHSDM can be used during the project development process. For more information, see Course No. FHWA-NHI-380071 and 380100 in the National Highway Institute catalog at http://nhi.fhwa.dot.gov.

  • For more information, contact the following:

    Shyuan-Ren (Clayton) Chen
    Office of Safety R&D, FHWA
    6300 Georgetown Pike
    McLean, VA 22101
    Telephone: 202-493-3054, Fax: 202-493–3417

    Mshadoni Smith
    Office of Safety – Analysis and Evaluation Team, FHWA
    1200 New Jersey Ave, SE
    Suite E73-413
    Washington, DC 20590
    Telephone: 202-366-7105

    Gene Amparano
    Resource Center, FHWA
    901 Locust Street, Room 466
    Kansas City, MO 64106
    Telephone: 816-329-3909, Fax: 816-329-3910


Federal Highway Administration | 1200 New Jersey Avenue, SE | Washington, DC 20590 | 202-366-4000
Turner-Fairbank Highway Research Center | 6300 Georgetown Pike | McLean, VA | 22101