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.

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 ...

While games like Monopoly or Scrabble are games of strategy, making a left turn at a Raleigh intersection is, too. A CBS 17 viewer reached out to us, saying turn signals on ...