Traffic flow management at signalized intersections remains a cornerstone of urban transport research, combining traditional traffic theory with modern data analytics and optimisation techniques. This ...

Research shows left turns at intersections are dangerous and slow traffic. Benjamin Rondel/The Image Bank via Getty Images Vikash Gayah: When you make a left turn, you have to cross oncoming traffic.

(The Conversation is an independent and nonprofit source of news, analysis and commentary from academic experts.) Vikash V. Gayah, Penn State (THE CONVERSATION) More than 60% of traffic collisions at ...

More than 60% of traffic collisions at intersections involve left turns. Some U.S. cities—including San Francisco, Salt Lake City and Birmingham, Alabama—are restricting left turns. Subscribe to our ...

The city looked at traffic collision data from calendar year 2024 and evaluated intersections where five or more injury or ...

With NoTraffic, Oklahoma City aims to improve traffic flow, support safety goals, and lay the groundwork for future traffic optimization and smarter intersections OVERLAND PARK, Kan., Dec. 17, 2025 ...