IHSDM: Modules

The IHSDM suite of software analysis tools for two-lane rural highways includes five evaluation modules:

• Crash Prediction Module: estimates the expected frequency crashes on a highway using geometric design and traffic characteristics.
• Design Consistency Module: estimates the magnitude of potential speed inconsistencies to help identify and diagnose safety concerns at horizontal curves
• Intersection Review Module: performs a diagnostic review to systematically evaluate an intersection design for typical safety concerns.
• Policy Review Module: checks highway segment design elements relative to design policy.
• Traffic Analysis Module: estimates operational quality-of-service measures for a highway under current or projected future traffic flows.

A sixth evaluation module is under development:

• Driver/Vehicle Module: estimates a driver’s speed and path along a highway and corresponding measures of vehicle dynamics.

To learn more about the IHSDM modules, click on one of the visuals below.

For additional information contact:

Raymond A. Krammes, Highway Research Engineer
Office of Safety Research & Development
Federal Highway Administration
6300 Georgetown Pike/HRDS
McLean, VA 22101
e-mail: ray.krammes@fhwa.dot.gov