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.

Vikash V. Gayah's research has been funded by various State Departments of Transportation (including Pennsylvania, Wisconsin, Washington State, Montana, South Dakota and North Carolina), US Department ...

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. Dr. Vikash ...

(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 ...

A U-turn can come in handy for drivers needing to quickly reverse course. And in many cases in Minnesota, making the 180-degree turn is perfectly legal. But just because a U-turn is permissible ...

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