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Phone: 515-294-8103
FAX: 515-294-0467

Website: www.ctre.iastate.edu/

Iowa State University--Becoming the Best

Road Safety Audit for the Intersection of US 59 and IA 9 in Osceola County, Iowa

Intersection US 59/IA 9 in northwestern Iowa

Researcher(s)

Principal investigator:

Project status

Completed

Start date: 09/26/11
End date: 04/30/12

Publications

Report: Road Safety Audit for the Intersection of US 59 and IA 9 in Osceola County, Iowa (3.74 mb pdf) April 2012

Sponsor(s)/partner(s)

Sponsor(s): Iowa Department of Transportation

About the research

Abstract:

The Iowa Department of Transportation (DOT) requested a road safety audit (RSA) of the US 59/IA 9 intersection in northwestern Iowa, just south of the Minnesota border, to assess intersection environmental issues and crash history and recommend appropriate mitigation to address the identified safety issues at the intersection.

Although the number of crashes at the location has not been significantly higher than the statewide average for similar intersections, the severity of these crashes has been of concern.

This RSA was unique in that it included intersection video observation and recorded traffic conflict data analysis, along with the daylight and nighttime field reviews.

This report outlines the findings and recommendations of the RSA team for addressing the safety concerns at this intersection.