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(1963) The Effect of the No-Passing Zone Sign on "Passing" Accidents, 1963. Transportation, Department of
(2001) Effectiveness of Roadway Safety Improvements, 2001. Transportation, Department of
(2002) Iowa Problem Indentification for Federal 402 State and Community Highway Safety Programs, Iowa Department of Public Safety, January, 2002. Public Safety, Department of
(2007) Crash Data Validation: An Iowa Case Study, February, 2007. Iowa State University
(2009) Spatial Scale of Clustering of Motor Vehicle Crash Types and Appropriate Countermeasures, 2009. Transportation, Department of
(2010) Safety Analysis of Low-Volume Rural Roads in Iowa, 2010. Transportation, Department of