Rural Expressway Intersection Synthesis of Practice and Crash Analysis
Advisory speed beacon, US 65, Bondurant, Iowa
Researcher(s)
Principal investigator: Tom Maze (project list)
Co-principal investigators:
- Neal Hawkins, 515-294-2744, hawkins@iastate.edu (project list)
Other authors: Garrett Burchett
Student researcher: Garrett Burchett
Project status
Completed
Start date: 10/01/03
End date: 03/31/04
Publications
Report: October 2004, http://www.intrans.iastate.edu/reports/expressway.pdf 3 mb (*pdf)
Related publications:
- Rural Expressway Intersection Safety (Tech transfer summary) March 2005
- Improving safety at expressway intersections (Technology News) December 2004
- Expressway crash data tell an interesting tale (Technology News) October 2004
*To read pdf files, you may need to download the free Adobe Acrobat Reader.
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.