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Safety Evaluation of Multi-lane Roundabout in the City of Phoenix

Speaker: Nafiul Islam Anan, Ph.D. student, Department of Civil and Architectural Engineering and Mechanics, University of Arizona

When

Noon – 1 p.m., May 6, 2026

Join in person or online: https://arizona.zoom.us/j/85456541042?from=addon

Image
A headshot of Nafiul

Summary: This project, in partnership with the City of Phoenix Department of Transportation, evaluates the safety performance of the multilane roundabout at West Lower Buckeye Road and South 99th Avenue, identified by the Maricopa Association of Governments (MAG) as one of the highest-risk intersections in the metro Phoenix region. The roundabout has experienced ongoing safety concerns, with crash patterns linked to failure-to-yield behavior, lane discipline issues, and geometric deficiencies. The project covers data compilation and baseline assessment using crash records and NoTraffic camera analytics, a before-and-after safety evaluation of re-striping and signage improvements, and the identification of root causes and targeted countermeasures to improve operational safety at the site.

Researcher's Bio: Nafiul Islam Anan is a first-year Ph.D. student and Graduate Research Assistant at the Center for Applied Transportation Sciences (CATS), University of Arizona. His research focuses on traffic safety, operations, and mobility.

Contacts

Bharat Pathivada