Case Study Tag: evaluation

Back to Catalog

Iowa DOT Safety Impact Dashboard Development

Iowa
Traffic safety projects can produce varying impacts on safety performance. While some projects substantially reduce crashes, others may yield limited or unexpected measurable effects. Establishing a robust framework for tracking crash histories associated with safety projects is therefore essential for the Iowa DOT and other state DOTs to assess project effectiveness, efficiency, return on investment, and broader safety performance implications.
AASHTO Safety Summit 2026 Poster

Evaluation of the Effectiveness of TxDOT Safer-By-Design using Crash Data

Texas
Texas DOT’s Safer-by-Design (SBD) tool, formerly known as the Safety Scoring Tool, is widely used across the state to support data-driven roadway safety decisions. The SBD is based on SPFs and CMFs. TxDOT conducted a pilot study evaluating the effectiveness of the SBD tool using crash data.
AASHTO Safety Summit 2026 Poster

Texas Case Studies to Highlight Predictive Safety Evaluation

Texas
As part of TX’s commitment to meet Vision Zero goals, HDR is actively engaged in assisting agencies by conducting comprehensive safety evaluations across all project types. The poster will highlight a proactive and data-driven approach, leveraging industry best practices and TxDOT’s leading safety tools.
AASHTO Safety Summit 2026 Poster

Driving Safer Projects with West Virginia SOAP and AASHTOWare Safety

West Virginia
West Virginia’s SOAP (Safety On All Projects) process is supported by AASHTOWare Safety proactive, data-driven decisions. Crash analysis, safety evaluation and countermeasure selection help prioritize safety and integrate proven strategies into project design.
AASHTO Safety Summit 2026 Poster

Texas DOT’s Combined CMF Calculator Tool (Version 2)

Texas
The Safety Division of the Texas Department of Transportation (TxDOT) developed an intuitive spreadsheet-based tool to estimate the combined safety effects of multiple countermeasures. This poster highlights an enhancement to the tool that was introduced last year, incorporating crash proportions into the combined CMF methodology to provide more accurate estimates of crash reduction benefits when multiple countermeasures are implemented. The enhancement also accounts for the fact that some CMFs are applicable only to specific crash types, ensuring that benefits are estimated only for the crashes each countermeasure is intended to address. This improvement significantly supports project prioritization by identifying projects with the greatest potential safety benefits. The tool also utilizes crash proportion data derived from TxDOT's AASHTOWare Safety platform, further improving the reliability and accuracy of safety benefit estimates across the state.
AASHTO Safety Summit 2026 Poster

Florida DOT’s New Policy – “Achieving Target Zero”

Florida
Florida Department of Transportation Secretary Perdue signed the “Achieving Target Zero” policy in March 2026 establishing the elimination of all traffic fatalities and serious injuries as agency goal and setting a framework for that goal through three coordinated strategies (engineering, education, and community engagement).
AASHTO Safety Summit 2026 Poster

Kansas’ Drive to Zero

Kansas
Kansas DOT’s Drive to Zero initiative builds safety culture through collaboration and is supported by crash reports data analysis, reporting, and public dashboards.
TPM Peer Exchange Video, Sep. 2024

A Collaborative Investigation of Truck Access into Roundabouts in Oregon

Oregon
Oregon DOT used field and simulation methods to understand and mitigate delays experienced by motor carriers in roundabouts, highlighting potential for improvements to better accommodate large vehicles.
Oregon State University Final Research Report2023 Safety Summit Poster

AWSC at Low-Volume Unsignalized Intersections

Delaware
With 40% of fatalities and serious injuries occurring at low-volume, unsignalized intersections, DelDOT implemented All-Way Stop Control. After three years, there were zero fatalities and 82% fewer injury crashes at the intersections evaluated.
AWSC Crash Trends MemoRoadway Safety Foundation Case StudyLocal News ArticleSafety Summit Poster 2023AASHTO Case Study

Connection SATX Downtown Feasibility Study: Historical Safety Analysis

Texas
A historical safety analysis from the Connection SATX Downtown Feasibility Study helped develop short-term improvements for the study area by analyzing vehicular and vulnerable road user crashes to identify specific safety concerns. The safety analysis provided great insights on vehicular, pedestrian, and cyclist crash patterns in the study area.
Study Webpage2024 Safety Summit Poster
Other keywords: