Case Study Tag: Crash reduction

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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

Deployment and Safety Evaluation of Variable Speed Limits on I-70

Colorado
Deployment and evaluation of a Variable Speed Limit (VSL) algorithm on I-70 in Colorado. The flow-, weather-, queue-, and transition-based algorithm adjusts speeds in real time. An Empirical Bayes before-after evaluation found approximately 30% reductions in crash frequency and severity.
AASHTO Safety Summit 2026 Poster

Advancing Safety Analysis with the AASHTO Highway Safety Manual 2nd Edition

AASHTO
Coming soon: The Second Edition of the AASHTO Highway Safety Manual. The updated manual is a collection of the latest methods for incorporating quantitative safety analysis into the development of highway transportation projects. Learn what’s new and how it differs from the first edition.
Advancing Safety Analysis with the AASHTO Highway Safety Manual 2nd Edition
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