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Rural Expressway Intersection Synthesis of Practice and Crash Analysis

Advisory speed beacon, US 65, Bondurant, Iowa

Advisory speed beacon, US 65, Bondurant, Iowa

Researcher(s)

Principal investigator:

Co-principal investigators:

Student researcher:

Project status

Completed

Start date: 10/01/03
End date: 03/31/04

Publications

Report: Rural Expressway Intersection Synthesis of Practice and Crash Analysis (3 mb pdf) October 2004

Related publications:

Sponsor(s)/partner(s)

Sponsor(s): Iowa Department of Transportation

About the research

Abstract: This report presents a national synthesis of rural expressway, two-way stop -controlled (TWSC) intersection safety strategies and intersection designs and an analysis of Iowa expressway TWSC intersection crash characteristics. A rural expressway is a multi-lane highway with a divided median and with mostly at -grade intersections, although some intersections may be grade separated. The synthesis of intersection strategies is conducted in two parts. The first is a literature review and the second part is a national survey of strategies currently being applied by state transportation agencies. The characterization of crash patterns at TWSC expressway intersections is examined through the analysis of 5 years of crash data at 644 intersections.