Case Study Tag: Network screening

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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

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

Arizona Virtuous Cycle of Safety – Traffic Data to RSA to Design Changes

Arizona
ADOT uses a continuous feedback loop in traffic safety. Crash and driver behavior monitoring develop road safety audit (RSA) candidate locations. RSAs develop recommended design changes. Approved recommendations are designed into roadway projects. New designs are then monitored for crash and driver behavior. Full circle.
AASHTO Safety Summit Poster 2026
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