Back in August, Audi announced that some of its cars would come with the ability to communicate with traffic lights. Available only on 2017 Audi Q7, A4 and A4 allroads built after June 1st, the feature only works at intersections that are connected to the what's called the Traffic Light Information system. Now, Las Vegas has become the first city to adopt TLI.

Hailed as the first vehicle-to-infrastructure (V2I) technology in the U.S., TLI launches this month. More cities are expected to sign on soon, but for now, it only works in Las Vegas. Its functionality is also limited for the time being.

Currently, drivers at a connected intersection will only be able to see how long it will be until the light turns green. In the future, Audi says the system could be used to help plan more-efficient routes, and it could even calculate the speed needed to hit the most green lights.

While TLI is only available in a few vehicles and is mostly a neat trick at the moment, it's got a lot of potential. Hopefully, over the next few years, more cities (and automakers) see the appeal of V2I systems.

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