Traffic engineers are learning that they can increase road efficiency and safety by eliminating left turns at many busy intersections, even those that have left turn arrows. This increases distance traveled for some people–some may have to make three right turns instead–but virtually everyone benefits in travel time, as package carrier UPS has learned. A traffic engineer and UPS official discuss how it could work. 


  • Patrick Browne, Vice President of Sustainability, UPS
  • Dr. Vikash Gayah, Assoc. Prof. of Civil Engineering, Pennsylvania State Univ.
  • Dan McMackin, PR Manager, UPS

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