U.S. Department of Transportation
Federal Highway Administration
1200 New Jersey Avenue, SE
Washington, DC 20590
Federal Highway Administration Research and Technology
Coordinating, Developing, and Delivering Highway Transportation Innovations
The IHSDM software may be downloaded free-of-charge at http://www.ihsdm.org.
The download process is simple:
First-time users should download the full distribution, which includes a complete set of documentation accessible through a Help Browser.