IHSDM users may request technical support by contacting the IHSDM Help Line or by writing to the IHSDM Support email address. The IHSDM technical support staff works onsite in the Geometric Design Laboratory at the Federal Highway Administration Turner-Fairbank Highway Research Center. Technical support is free-of-charge to users.

IHSDM Help Line

Users may call the IHSDM Help Line at (202) 493–3407. The Help Line is monitored during normal business hours on weekdays, except for Federal Government holidays.

IHSDM Support Email

Users may contact the IHSDM technical support staff by sending an email to IHSDM.Support@dot.gov. Staff monitors this email account during normal business hours on weekdays, except for Federal Government holidays.

Training Course

Training related to IHSDM is offered by the Federal Highway Administration’s (FHWA’s) Resource Center (RC) and through the National Highway Institute (NHI), including a new "Introduction to the FHWA IHSDM" Blended Training course (Course Number FHWA-NHI-380100); and an RC "Applications of the FHWA IHSDM CPM" (follow-up course to the new NHI 380100 course), currently under development and expected to be available fall 2022. For additional information, refer to the NHI website. 

IHSDM “How-To” Videos

FHWA has produced a series of three IHSDM "How-To" training videos, which can be accessed directly below or from the Roadway Safety Data Program Toolbox How-To Video page.

IHSDM Part 1: Capabilities and Navigation

IHSDM Part 2: Data Entry

IHSDM Part 3: Crash Prediction Module and Economic Analysis Tool

FHWA established the IHSDM User Group to:

• Foster communication between IHSDM users, by providing a forum for users to share their experiences with the software (e.g., success stories/case studies, challenges faced and solutions, building support for using IHSDM within an agency).
• Provide a forum for discussions/presentations on specific IHSDM-related topics.

To become a member of the IHSDM User Group (i.e., to be added to the IHSDM User Group mailing list), send an e-mail to IHSDM Support at ihsdm.support@dot.gov.

User Group Meetings

June 6, 2022 

The June 2022 IHSDM User Group meeting focused on presentations highlighting the Wisconsin DOT’s use of IHSDM:

• Wisconsin DOT and IHSDM (Kevin Scopoline - State Traffic Safety Engineer, WisDOT).
• Safety Evaluation of the I-894 Freeway Rehabilitation Project (Chris Hager - WisDOT; and Eric Youngblom - HNTB).
• IHSDM Intersection Example (Kevin Scopoline - WisDOT).

Additional topics included FHWA’s future plans for IHSDM and the User Group; IHSDM/Highway Safety Manual training opportunities via the FHWA Resource Center and the National Highway Institute; and IHSDM 2021 capabilities and how to download and install the software.

Click here  to access a recording of the meeting.

In the IHSDM-HSM Predictive Method 2021 Release, documentation is available through a Help Browser, accessed within the software via the "Help" item on the IHSDM main menu. Contents are organized by main topics, including:

• Release Notes for the 2021 Public Release.
• Frequently Asked Questions (FAQs).
• IHSDM Overview
• Acronyms and Abbreviations.
• Installation and Configuration.
• System Administration.
• Data Considerations.
• IHSDM Interface and Data Organization.
• IHSDM Workflow.
• Engineers Manuals.
• Economic Analyses Tool (EA Tool). 

In addition, a Tutorial provides users with an overview of using the IHSDM software.

IHSDM 2021 Release webinar:

An FHWA Data-Driven Safety Analysis (DDSA) webinar on IHSDM 2021 – New Intersection Models Support DDSA was held October 18, 2021 to introduce the IHSDM 2021 Release. The software includes new crash prediction capabilities for some intersection types not covered in the 1st Edition Highway Safety Manual (HSM), based on methods developed under NCHRP Project 17-68 for inclusion in the future HSM2. The IHSDM 2021 Release marks the end of FHWA’s long-term IHSDM software development. In addition to an overview of the new intersection crash prediction methods, the webinar conveyed FHWA’s plans for the future distribution of IHSDM, and for continuing to provide technical support and training to IHSDM users. A recording of the webinar is available here.

IHSDM 2020 Release webinar:

An FHWA DDSA webinar on IHSDM 2020 – New Enhancements Support DDSA was held October 28, 2020 to introduce the IHSDM 2020 Release. The webinar explored what is new in the IHSDM 2020 Release, and how the tool can support DDSA initiatives by implementing HSM predictive methods. The webinar provided an overview of the latest IHSDM enhancements that will assist users in entering and editing data, and will provide more flexibility in performing crash prediction evaluations. A recording of the webinar can be accessed here. 

IHSDM 2019 Release webinar:

An FHWA DDSA webinar on IHSDM 2019 – New Enhancements Support DDSA was held on November 7, 2019 to introduce the IHSDM 2019 Release. The webinar focused on recent enhancements to the IHSDM software, including:

• Roundabout Crash Prediction Method – the 2019 Release includes new crash prediction methods for Roundabouts, which were developed under NCHRP project 17-70 and documented in NCHRP Research Report 888 (Development of Roundabout Crash Prediction Models and Methods)
• User-Defined Crash Modification Factors (CMFs) - the capability for users to define and apply User-Defined CMFs is now available as part of the crash prediction process

A recording of the webinar can be accessed here.