Zachary Hans


Director, CWIMS





Director, Center for Weather Impacts on Mobility and Safety



About Zachary

Mr. Hans, a professional engineer licensed in Iowa, has 25 years of professional experience in transportation engineering, working primarily in the areas of traffic safety. He also conducts research in the areas of maintenance operations, planning, enforcement, traffic engineering, and asset management. A key component of many of Mr. Hans’ research activities is the application of information systems, particularly geographic information systems.


  • MS, Civil Engineering (Transportation Engineering), Iowa State University, Ames, IA, 1994 
  • BS, Civil Engineering, Iowa State University, Ames, IA, 1993

Professional Experience

  • Director, Center for Weather Impacts on Mobility and Safety, 2016–present
  • Research Engineer, Center for Transportation Research and Education, 1995–present

Selected Research Projects by Area - Traffic Safety

  • Iowa Traffic Safety Data Service, Iowa GTSB, Iowa DOT, 1999–present
  • Traffic Safety Improvement Program Process Improvement: Phase 2, Iowa DOT, 2019–present
  • usRAP Evaluation of the Indiana Toll Road, Indiana Toll Road CC, 2019–present
  • Collection of MIRE FDE on Non-State-Owned Public Roads, Federal Highway Administration (FHWA), 2017–present
  • Development of Guidance and Outreach to Reduce Roadway Departure Crashes, FHWA, 2017–present
  • usRAP Evaluation of Interstate Truck Routes, Roadway Safety Foundation (RSF), 2019–present
  • usRAP Support for Local Agencies, RSF, 2019–present
  • Unreported Deer Crashes on Major Highways, Iowa DOT, 2020–present
  • Public Infrastructure Road Safety Promotion, Education and Technology Transfer: Technical Support for usRAP Activities, RSF, 2019
  • Office of Traffic and Safety Support, Iowa DOT, 2017–present
  • Office of Traffic Operations Research Support, Iowa DOT, 2019–present
  • Application of Safer Roads Investment Plans and Other Related Tools for Safety Management of Utah Roads and Streets, Utah DOT, 2019
  • Iowa Local Road Safety Plans (Phases 1 – 4) and Iowa District Road Safety Plans, Iowa DOT, 2019
  • High Friction Surface Treatment for High Crash Locations, Iowa DOT and Midwest Transportation Center (MTC), 2014–present
  • Safety Benefits of Highway Infrastructure Investments, AAA Foundation for Traffic Safety (AAA FTS), 2016
  • Develop Safer Roads Investment Plans for State Highways in Utah, Utah DOT, 2016
  • Development of On-Line Course Content for usRAP Training, RSF, 2018
  • usRAP Technical Support 2016 – 2017, RSF, 2018
  • Statewide Heavy Truck Crash Assessment, Iowa DOT, Mid-American Transportation Consortium (MATC), 2014
  • usRAP Phases 1 – 3, AAA FTS, 2010
  • usRAP Studies for Illinois Counties, Illinois DOT, 2014
  • Development of usRAP Risk Maps for Selected Highways in Northern Virginia, Transurban, 2014
  • Safety Analysis on Low Volume Rural Roads in Iowa, Iowa DOT, 2010
  • A Study on the Effectiveness of Special Deer Hunts in Reducing Deer-vehicle Crash Rates in Iowa, Iowa DOT, 2010
  • Enhancing Motorcycle Conspicuity Awareness in Iowa, Iowa DOT, 2010

Selected Research Projects by Area - Weather and Maintenance Operations

  • Aurora Pooled Fund Program Management, Iowa DOT, 2018–present
  • Evaluation of Road Weather Messages on DMS Based on Roadside Pavement Sensors, MnDOT, 2020–present
  • Iowa DOT Maintenance Decision Support Tools, Iowa DOT, 2018–present
  • Invasive and Non-Invasive Sensing: Assessing Agreement between Measurement Systems, Aurora Pooled Fund, 2019–present
  • Pikalert Connected Autonomous Vehicles (CAV) Demonstration, Iowa DOT, 2019
  • Operational Data to Assess Mobility and Crash Experience during Winter Conditions, Iowa DOT and Midwest Transportation Center (MTC), 2018
  • Safety and Mobility Impacts of Winter Weather, Phases 1–3, Iowa DOT, MATC, 2014
  • Analysis of Dynamic Advisory Messaging, Phases 1–2, Iowa DOT, 2018

Selected Research Projects by Area - Bridges and Railroads

  • Assessing Bridge Characteristics for Use and Importance as Roosting Habitats for Bats, Iowa DOT, 2018
  • Upgrading Bridge Rails on Low Volume Roads in Iowa TR-679, Iowa Highway Research Board (IHRB), 2016
  • Development of Railroad Highway Grade Crossing Closure Rating Formula, Iowa DOT, Center, MATC, 2014
  • Analysis of the Safety Benefits of Shielding Bridge Piers, Iowa DOT, 2009

Selected Research Projects by Area - Roadway Data

  • Technical Support for Roadway Information Database (RID) for Safety Training and Analysis Center (STAC), FHWA, 2017 –
  • User Training for the SHRP 2 RID and NDS Databases, FHWA, 2017
  • Roadway Data Improvement Program (RDIP) Assistance, FHWA, 2016
  • SHRP 2 S04A RID Development and Technical Coordination and Quality Assurance of the Mobile Data Collection Project (S04B), SHRP2, 2014
  • Roadway Data Extraction Technical Assistance Program, FHWA, 2018
  • Utilization of Remote Traffic Monitoring Devices for Work Zone Assessment, Smart Work Zone Deployment Initiative, 2012

Selected Research Projects by Area - Driver Licensing

  • Midwest Cross-Jurisdictional Image Verification, Iowa DOT, 2019
  • Evaluation of Iowa’s Driver Improvement Program, Iowa DOT, 2009

Professional Affiliations and Honors

  • Licensed Professional Engineer, State of Iowa
  • Iowa Statewide Traffic Records Coordinating Committee (STRCC)
  • Iowa Department of Public Safety Commissioner’s Special Award for Traffic Safety, 2006

Completed Research

Jun, 2009

In-Progress Research

May, 2021