Hossein Naraghi


Research Scientist, CTRE






InTrans, CTRE

About Hossein

Dr. Naraghi is a senior research engineer at the Institute for Transportation’s Center for Transportation Research and Education. He has more than 20 years of professional experience in transportation engineering and construction management. He conducts research on various safety-related projects on the safety and operational impacts of drivers, roadways, and environmental characteristics. He also conducts research in the areas of road maintenance and operations. Dr. Naraghi also manages the Iowa Traffic Safety Data Services (ITSDS) program, which responds to crash data requests coming from various agencies. ITSDS supplements and facilitates crash data accessibility and data integration by providing agencies, organizations, and individuals with crash data expertise and resources.


  • PhD, Transportation Engineering, Iowa State University, Ames, IA, 2017 
  • MS, Civil Engineering, Iowa State University, Ames, IA, 2004 
  • BS, Civil Engineering, Civil Engineering, University of Mississippi, Oxford, MS, 1993 

Professional Experience

  • Research Engineer/Scientist, Center for Transportation Research and Education, Institute for Transportation, 2016–present
  • Research/Teaching Assistant, Institute for Transportation, 2013–2016
  • Project Manager, N&J Construction Innovation, Canberra, ACT, Australia, 2009–2012
  • Project Manager, Cardno Young, Canberra, ACT, Australia, 2005–2010
  • Research Assistant, Center for Transportation Research and Education, Iowa State University, 2001–2005
  • Site Engineer, A & L Engineering and Construction Company, Garland, TX, 2001–2002
  • Project Manager, Machine Sazy Vijeh Company, Tehran, Iran, 1996–2001
  • Site Engineer, Oil Industrial Engineering Company, Tabriz, Iran, 1993–1995

Selected Research Projects

  • Work Zone Safety Analysis Using SHRP2 Naturalistic Driving Study Data, Federal Highway Administration
  • Work Zone Safety using SHRP2 Naturalistic Driving Study Data, MnDOT, 2016–2018
  • Iowa Traffic Safety Data Service, Iowa GTSB, Iowa DOT, 2013–present
  • Iowa Traffic Safety Data Service (ITSDS) SICL for Intersections, Iowa Governors Traffic Safety Bureau, Iowa DOT, 2015–present
  • Iowa Local Road Safety Plans–Phase 3, Iowa DOT, Sub-contractor to Kimley-Horn
  • Iowa Pavement Management Program, Iowa DOT
  • District Road Safety Plans, Iowa DOT
  • US Road Assessment Program (usRAP), Subcontractor to MRIGlobal
  • US Road Assessment Program (usRAP), AAA Foundation for Traffic Safety, 2017–present
  • usRAP Studies for Wisconsin Counties, WI DOT
  • Application of Safer Roads Investment Plans for Safety Management of Utah Roads and Streets, Utah Department of Transportation, Subcontractor to MRIGlobal, 2017–present
  • usRAP Studies for Utah Counties, Utah DOT
  • usRAP Studies for Utah Interstate, Utah DOT
  • usRAP Studies for Indiana Toll Road, Indiana Toll Road Authority
  • Development of Iowa Strategic Highway Safety Plan
  • Development of Iowa Intersection Database with full MIRE Elements, 2013-present
  • Horizontal Curve identification and Evaluation, Iowa DOT
  • Developing a Tutorial for Iowa Crash Analysis Tool (ICAT), Iowa DOT
  • Development of Safety Performance Functions (SPF’s) and Potential for Crash Reduction (PCR) for Iowa Paved Intersection
  • Highway Safety Manual Calibration for Various Roadway Networks in Iowa
  • Research Projects for the Iowa DOT Office of Maintenance, 2018–present

Selected Publications

  • Investigating the Crash Interaction of Younger and Older (Y_O) Drivers, December 2004
  • Observing and Modeling Drivers’ Behavior in Work Zone using SHRP2 Naturalistic Driving Study Data, December 2017

Professional Affiliations

  • Institute of Transportation Engineers (ITE)
  • National Collegiate Athletic Association (NCAA)
  • Friend, TRB Committee on Safety Data Analysis and Evaluation, ANB20
  • Friend, TRB Roadway Safety Data Subcommittee, ABJ20
  • Friend, TRB Traffic Law Enforcement Committee ANB40