Case Study Filter: Countermeasures

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Improving Active Transportation Safety Data and Practice with GATIS in Oregon

Oregon
Oregon DOT is exploring the General Active Transportation Data Specification (GATIS) to unlock new insights into the relationship between infrastructure and safety incidents on Oregon sidewalks, bike lanes, intersections, and trails, supporting safety research and countermeasure implementation.
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

Enhancing Safety on Teton Pass: A WYDOT Vehicle Arrestor Case Study

Wyoming
The Wyoming Department of Transportation used a net-based vehicle arresting system on WYO 22 / Teton Pass to address a steep-grade safety challenge where heavy vehicle braking systems can fail. The poster will highlight the safety problem and performance of the system.
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

A Proactive Path to Safer Roads: New Jersey DOT’s Systemic Safety Program

New Jersey
NJDOT’s systemic safety approach proactively reduces crash risk by applying low-cost, proven countermeasures across the network. The poster summarizes horizontal curve, wrong-way driving, school zones, signalized intersection, pedestrian, and bicyclist analyses using a machine learning approach.
AASHTO Safety Summit 2026 Poster

Minnesota Evaluations for Rest in Red and Advance Warning Flashers

Minnesota
On an MnDOT-funded project, HDR and HSRC evaluated traffic safety strategies in Minnesota. The analysis results found statistically significant safety effectiveness for both Rest-in-Red overnight signal operations in Ramsey County and advance warning flashers at signalized intersections statewide.
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

Roundabout Screening Study – Seeking Good Locations for Crash Reduction

Connecticut
A roundabout intersection screening study was performed by the Capitol Region Council of Governments for the 38 communities in the Hartford, Connecticut region. The study identified locations likely to result in significant reduction of fatal and serious crashes if converted to a single lane roundabout.
AASHTO Safety Summit 2026 Poster

Evaluating the Effect of Stop Bar Setbacks at Signalized Intersections

Colorado
Signalized intersections with stop bars set back 40 to 50 ft. from conflicting traffic, depending on posted speed, had substantially fewer broadside crashes. U.S. and Australian data analyzed using Broadside Safety Performance Functions and network screening indicated 40 to 50% reductions.
AASHTO Safety Summit 2026 Poster

Rounding Out Roundabouts in CT

Connecticut
Connecticut DOT formed a roundabout committee of professionals trained on evaluating the planning, design, and construction of roundabouts on municipal and state roads.
AASHTO Safety Summit Poster 2025CDTOD Roundabouts WebsiteLocal News VideoLocal News Article
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