Skip to main content

Virtual traffic lights ‘can reduce commute times’

Researchers at Carnegie Mellon University (CMU) in the US claim to have found a solution to delays caused by traffic signals. They estimate that replacing physical traffic signals with virtual traffic signals could reduce urban commute times by 40 per cent. Electrical and Computer Engineering professor Ozan Tonguz’s research on virtual traffic lights uses connected vehicle technology, enabling vehicles to manage traffic control without infrastructure based traffic lights. Using the technology, virtua
January 16, 2015 Read time: 2 mins
Researchers at Carnegie Mellon University (CMU) in the US claim to have found a solution to delays caused by traffic signals. They estimate that replacing physical traffic signals with virtual traffic signals could reduce urban commute times by 40 per cent.

Electrical and Computer Engineering professor Ozan Tonguz’s research on virtual traffic lights uses connected vehicle technology, enabling vehicles to  manage traffic control without infrastructure based traffic lights.

Using the technology, virtual traffic lights will appear on the driver’s windshield as they approach an intersection. “When the driver is looking through the windshield, they’ll see that going straight is a green light, and turning right is a red light,” Tonguz explains. “It’s a seamless process, the driver does not get involved in this decision making.”  The virtual traffic light will turn off once the driver proceeds through the intersection.

Tonguz claims that virtual traffic lights will do more than lower commuter’s stress levels. He says they’ll mitigate traffic congestion, reduce commute times, decrease the carbon footprint of vehicles, and lead to a greener environment.

Related Content

  • Copenhagen to showcase ITS in action at ITSWC 2018
    December 18, 2017
    As delegates head for the 2017 ITS World Congress in Montreal, we talk to Copenhagen mayor Morten Kabell about why his city is the ideal location for next year’s event. It may have been a long time coming but the ITS World Congress will be in Copenhagen in 2018 and there can be few more fitting places to host the event. By any number of metrics - interconnected transport, cycle commuting, safer streets, reduced pollution, sustainable energy and quality of life - the Danish capital has implemented what m
  • Why intersections have got smarter in Chattanooga
    March 13, 2023
    Tennessee city has joined the ranks of urban areas seeing the benefit of ITS technology, particularly Lidar, at smart intersections – with a little help from Seoul Robotics. Adam Hill dives into the detail
  • Lidar lets planners see big picture in Chattanooga
    April 14, 2025
    The city of Chattanooga, Tennessee, is attempting to make its streets safer by using the largest deployment of Lidar-based traffic detection in the US. Adam Hill reports…
  • Creating safer roads with vehicle communication
    March 26, 2013
    Accurate, timely information which eliminates the need to brake quickly when approaching a work zone or other road hazard could prevent crashes and save lives, according to research by the University of Minnesota. Thanks to research by the University of Minnesota, this vision is closer than ever to reality. “In the past fifty years we’ve made great strides in reducing traffic fatalities with technologies that save lives in crashes, like airbags and seat belts,” says M. Imram Hayee, electrical and computer e