Presentation on theme: "Interactive Highway Safety Design Model (IHSDM). Goal To marshal the best available knowledge about safety effects of geometrics into a more useful and."— Presentation transcript:
Interactive Highway Safety Design Model (IHSDM)
Goal To marshal the best available knowledge about safety effects of geometrics into a more useful and usable form for highway project planners and designers.
What is the Interactive Highway Safety Design Model (IHSDM)? A suite of software analysis tools used for evaluating the safety and operational impacts of highway geometric design.
Intended Usage Throughout the highway design process (preliminary planning and engineering through detailed design to final review) For existing and new alignments On two-lane rural highways (2003 release)
Partnership State DOTs ( Arkansas, California, Illinois, Minnesota, North Carolina, Washington, and West Virginia) Software Vendors (Import data from design packages) GEOPAKCAiCE
Intersection Review Module Diagnostic Review Expert system that applies a systematic evaluation of an existing or proposed intersection geometric design to identify possible safety concerns and treatments –27 concerns (configuration and alignment) –Treatments include design improvements & mitigation measures
Traffic Analysis Module Scope Uses TWOPAS to estimate traffic quality of service measures (average speed and % time following other vehicles) Evaluates the operational performance of alternatives to passing and climbing lanes, and short four- lane sections
Driver/Vehicle Module Scope Driver performance model linked to a vehicle dynamics model that estimates driver speed and path, skidding and rollover potential Alpha version available Expected release in 2004
2003 Release 1 st public release of IHSDM May be downloaded free-of- charge from IHSDM Web site Technical support is available (see IHSDM Web site for details)
IHSDM Web Site
Training Course Pilot offerings of the IHSDM training course: July hosted by Washington State DOT in Vancouver August hosted by Central Federal Lands in Denver August hosted by Montana DOT in Helena September hosted by Wisconsin DOT in Madison September 29-October 1 hosted by Mississippi DOT in Jackson October 7-8 hosted by Maine DOT in Augusta Contact Ray Krammes: or (202)