Development of a Conflict Analysis Methodology Using SSAM

Project Details
STATUS

Completed

START DATE

01/01/10

END DATE

12/31/11

RESEARCH CENTERS InTrans, CTRE, MTC
SPONSORS

Iowa Department of Transportation
Midwest Transportation Consortium

Researchers
Principal Investigator
Reginald Souleyrette

Associate Director for Transportation Planning and Information Systems

Co-Principal Investigator
Tom Maze

Transportation Engineer

Student Researcher(s)
Joshua Hochstein

About the research

The ultimate goal of this research was to provide improved design guidance for J-turn intersections by learning more about the safety and operational consequences of including or excluding certain geometric design features under various traffic volume conditions.

The proposed methodology to accomplish this research objective was to use the VisSim micro-simulation software package in conjunction with Federal Highway Administration (FHWA) Surrogate Safety Assessment Model (SSAM).

Three alternative high-speed rural expressway intersection designs were modeled previously in VisSim and used to accomplish this analysis. This report examines the use of SSAM for performing a conflict analysis, comparing the safety consequences of alternative designs, and developing conflict and/or crash modification factors. A conflict analysis methodology using the SSAM software was developed and refined. The refined conflict analysis methodology is included in this report.


Funding Sources:
Iowa Department of Transportation ($58,800.00)
Midwest Transportation Consortium ($26,465.00)
Total: $85,265.00

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