Explore relevant case studies by filtering via agency, keyword, or pre-set filters in the left menu, or by using the topic tags located at the bottom of the page.
Real-Time Work Zone Speed Management and Advanced Safety Alerts System
Maryland
This project demonstrate utilizing UAS (unmanned aircraft) for work zone safety monitoring and speed management. The system has 4 functions: traffic sensing of lane-by-lane data; hazard identification of high-speed vehicles; proactive dissemination of situation-aware alerts; and dynamic downstream alert verification.
Rear-End Collision Prevention Function in Signalized intersection
Maryland
Study (pre-deployment assessment) aimed to mitigate rear-end collision risks at signalized intersections utilizing advanced lane-based, wide-range detection sensors extending Dynamic All Red Extension to optimizing the green termination time.
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.
Proactive Safety Screening by Forecasting Roadway-Context Change
Kentucky
Static roadway context classifications may not fully capture emerging crash risk. To address this limitation, the framework tracks crash-density trends and context-driving factors to identify transition zones and forecast upward shifts, guiding screening and proactive safety investments.
Kansas DOT has adopted a performance-based practical design approach to comparing safety benefits of key project design elements. With partner HDR, come hear how project level-design support tools have prepared KDOT for upcoming Green Book changes and led to a statewide approach for safe design
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.
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.
Speed Safety Cameras in School Zones: State DOT Support for Local Readiness
North Carolina
North Carolina DOT supported work to translate a new State speed camera law into practical local readiness through feedback, peer exchange, and State agency participation, providing a repeatable approach for the implementation of other emerging safety technologies.
