Audi launches traffic light timing system in Las Vegas

It's a big first step in V2I tech.

  • Image Credit: Audi
Audi announced today that its new Traffic Light Information (TLI) system will go online in Las Vegas this month, making it the first city to activate a vehicle-to-infrastructure (V2I) system on public roads. The system transmits information from traffic lights to servers operated by Audi partner Traffic Technology Services and onto compatible Audis over a 4G LTE connection. This will allow drivers to see how long it will take the red light ahead to change to green.

The feature is available on Audi A4, A4 Allroad, and Q7 models built after June 1, 2016, and requires a subscription to Audi's streaming service. Audi points out that setting up a V2I infrastructure opens up the possibility to provide navigation directions that take traffic lights into account. Cars could even coach drivers how fast to go to hit more green lights.

In addition, this information could allow engine start-stop systems to shut off sooner when approaching red lights and start up immediately when the light turns green. Information could also flow back to municipalities, giving them a more accurate picture of traffic flow. Washington will soon join Las Vegas in supporting Audi's V2I technology. They're the only two cities confirmed so far, though Audi says it's working to get more on board.

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