Traffic Safety Resource Guide
Explore data and analysis tools to support funding and design for transportation safety projects.
Iowa Strategic Highway Safety Plan (SHSP)
An SHSP is a statewide-coordinated safety plan that provides a comprehensive framework for reducing highway fatalities and serious injuries on all public roads.
Data and Analysis Tools
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Iowa Crash Analysis Tool (ICAT)
Statewide crash data for current year to date and prior 10-years. Filters, summary reports and dashboards.
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Potential for Crash Reduction (PCR)
Statewide network screening for intersections and segments comparing safety performance to comparable facilities.
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Crash Data Dashboards
Crash data for Key Emphasis Areas and Current-year-to-date compared to prior 5-years. Filters by jurisdiciton/facility.
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Crash Reduction Factor List (CRFs)
Common project Crash Reduction Factors from FHWA CRF/CMF Clearinghouse appropriate for Iowa project contexts.
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Safety Analysis Guide
Additional detail for users of Iowa DOT safety data and tools.
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Strategic Highway Safety Plan (SHSP)
Statewide coordinated plan providing a comprehensive framework to reduce fatalities and serious injuries on Iowa roads.
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Traffic Counting
Iowa DOT traffic data collection program information
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Traffic Data Map
Interactive Iowa DOT roadway volume (AADT) and intersection turning movement data.
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ISU InTrans Operations and Safety Dashboards
Traffic Operations dashboards with focus areas of work zones, incident management, speed/hard braking, and maintenance.
Iowa DOT Safety Programs and Funding
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Local Safety Funding Comparison Table
Compare Iowa DOT funding programs for your local or joint Iowa DOT–Local Public Agency safety project.
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Traffic Safety Improvement Program (TSIP)
Site-specific or Traffic Control Device (TCD) roadway safety projects focusing on locations of existing crash history .
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Local Highway Safety Improvement Program (HSIP-Local)
Systemic Roadway safety projects focusing on crash risk factors and countermeasures along a corridor or multiple sites.
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County-State Traffic Engineering Program (C-STEP)
Locally led jointly funded County+DOT projects on Primary roads.
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Urban-State Traffic Engineering Program (U-STEP)
Locally led jointly funded City-DOT projects on Primary roads.
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Traffic Engineering Assistance Program (TEAP)
Traffic Engineering Studies available to all LPAs.
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Complimentary Roundabout Review
Roundabout feasibility, concept, or plan reviews available to all Cities and Counties.
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Transportation Alternatives/TAP
Smaller-scale pedestrian/bicycle, recreational trail, safe routes to school, and other community improvement projects.
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Full Iowa DOT Grants/Programs (Funding Guide)
Comprehensive list of Iowa DOT administered State and Federal funding opportunities for LPAs.
Local Safety Funding Program
Iowa DOT Local Safety Funding Program Comparisons
Compare Iowa DOT funding programs for your local or joint Iowa DOT–Local Public Agency safety project.
Outreach, Education, Agency Training
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Highway Safety Features
Webpages and information about Highway Safety Features found on Iowa's roads.
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Traveler Safety Videos
YouTube playlist for Iowa DOT traveler safety topic videos - pedestrians, intersections, and safe travel practices.
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Iowa DPS GTSB Grants
Iowa Department of Public Safety grants for traffic safety enforcement, education, data, and outreach.
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Iowa LTAP RSAs and Workshops
Iowa Local Techical Assistance Program (LTAP) information for local public agencies.
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Bike/Pedestrian Planning
Iowa DOT pedestrian and bicycle planning, policies, and data.
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DMV Driver’s Manual
Education material for driver's education for cars, motorcycles, CDL, etc.
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Iowa County Engineer Service Bureau
Resources for Iowa Counties.
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Iowa Public Works Service Bureau
Resources for Iowa Cities.
Traffic Engineering Resources
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Traffic & Safety Manual
Information about signing, marking, and Iowa DOT implementation of the Manual on Uniform Traffic Control Devices (MUTCD)
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Guidelines for Traffic Impact Analysis
Traffic Impact Studies (TIS) and Traffic Impact Letters (TIL).
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Intersection Control Evaluation (ICE) Manual
Methods, data, and performance measures for evaluating intersection alternatives.
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Access Management
Access Management Policy, Manual, Permitting, and Category map.
Design and Standards
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Design Manual
Current editions of the Iowa DOT Design Manual.
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Electronic Reference Library (ERL)
Iowa DOT Standard and Supplemental Specifications, I.M.s, and Construction Information.
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Standard Road Plans
Standard design features, methods, and materials.
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Iowa SUDAS
Iowa Statewide Urban Design and Specifications.
Speed Management
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Speed Limit Setting Brochure
Information about Iowa Code and Iowa DOT Speed Limit setting procedures.
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Speed Feedback Sign Program
Digital Speed Feedback Signs mounted below speed limit signs for driver awareness and traffic calming.
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Automated Traffic Enforcement
Automated Traffic Enforcement permits for speed enforcement resulting from House File 2681.
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ISU InTrans Speed Mgmt Toolbox
Speed Management Toolbox for Rural, Urban, Suburban Facilities.
DOT Bureau / References / External Partners
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Local Systems
Local Systems Bureau administers many LPA projects in compliance of state and federal policies and procedures.
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LSB LPA Project Dev. Guides and I.M.s
Federal-Aid and Non-Federal-Aid Project Development Guides for Local Public Agencies, Instructional Memorandums.
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Systems Planning Bureau
Systems Planning Bureau oversees traffic data collection, traffic forcasts, and multimodal long range plans.
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Traffic Operations/TIM/TMC
Traffic Incident Management, Traffic Management Center, Work Zones, and Intelligent Transportation Systems (ITS).
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Iowa DPS Governor’s Traffic Safety Bureau
National Highway Traffic Safety Administration (NHTSA) federal highway safety funds for enforcement, education, and EMS.
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ISU InTrans/CTRE Research
Iowa State University Institute for Transportation (InTrans)/Center for Transportation Research and Education (CTRE).
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University of Iowa DRSI Research
Driving Safety Research Institute.
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Iowa Highway Research Board
Advisory board of Iowa Counties, Iowa Cities, and Iowa DOT coordinates research and development.
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Iowa DOT Districts
Contact information for the six Iowa DOT District offices and staff.