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

  • US transportation 'needs political leadership'
    November 9, 2012
    Long-time industry leader John Worthington reflects on where transportation in the US is heading – and where it should be going. Interview with Jason Barnes. The US’s new transportation bill reflects much of what is wrong in the sector in general and in ITS in particular, according to John Worthington. While a decision is welcome, he says, it does little more than provide certainty of funding for anything other than day-to-day operations. Worthington, former Chairman and CEO of TransCore, is back in the ITS
  • Connected vehicle trials get big backing from USDOT
    March 14, 2016
    Connected vehicle technology will emerge as a sustainable reality at three sites in the US over the next four years. Jon Masters reports. Advocates of connected vehicle (CV) technology have received a welcome boost from news that the US government has committed a further $4 billion towards automated vehicle research and CV technology. This comes hot on the heels of the US Department of Transportation’s $42 million CV pilot pledge in October last year.
  • Electronic toll collection delivers efficient traffic regulation
    February 3, 2012
    Electronic tolling systems have been in use for decades now. Worldwide, steadily more and more tolling systems are being set into operation, providing efficient means for traffic regulation and financing of infrastructure. But despite this maturity enforcement is still not being given the consideration it deserves. Q-Free's Steinar Furan writes
  • Swarco Navigates Future of Urban Mobility: Solutions for Smarter Cities
    April 28, 2025

     

    Urban mobility faces unprecedented challenges — rising congestion, environmental pressures, and the urgent need for efficient, inclusive transport systems. How can cities respond? During the Congress, industry leaders will explore actionable solutions, with Swarco at the forefront of these critical discussions.