Case Study Filter: Countermeasures

Back to Catalog

Lighting Design Guidelines for Pedestrian Crosswalks

Massachusetts
MassDOT is developing a a lighting design guide for crosswalks with the goal of improving the safety of nighttime crossings. The guide includes tools to help designers prioritize crosswalk lighting improvements based on crash history, risk, and pedestrian demand, supporting safer crossings statewide.
AASHTO Safety Summit 2026 Poster

Nebraska’s Interstate Cable Median Barrier Success

Nebraska
Nebraska implemented cable median barrier on a few segments of Interstate 80. We have observed a reduction in fatalities and serious injuries from cross-over median crashes. The poster will also include cable median barrier strike and repair stats to show the maintenance perspective with safety.
AASHTO Safety Summit 2026 Poster

Advanced, Interlocking Portable Concrete Barrier

Nebraska
A new, advanced portable concrete barrier (PCB) was developed to satisfy MASH Test Level 3 safety criteria. The PCB eliminates joint hardware by utilizing interlocking top and bottom segments, which provides joint continuity, improved strength, and greatly reduces barrier deflections.
AASHTO Safety Summit 2026 Poster

Measuring Safety Benefits to Guide HSIP Investments in New Jersey

New Jersey
NJDOT uses observational before/after analyses with volume adjustment to evaluate countermeasure effectiveness and safety benefits. The poster shows how the tool supports data-driven decisions with examples: centerline rumble strips, high-friction surface treatment, and “Jersey All Red Extension.”
AASHTO Safety Summit 2026 Poster

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
Other keywords: