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Audi's stoplight detection system, called Travolution, has been given the go-ahead for expansion in the company's hometown of Ingostadt, Germany. Travolution establishes a connection between a red light and a vehicle, so that as a specially equipped car moves toward a red light at an intersection, stop light gantries fitted with communications modules can let the car know when the light will turn green. The car then lets the driver know what speed he should maintain in order to pass through the intersection without having to brake for the light and then accelerate again.

The system's promise is in streamlining traffic flow, increasing gas mileage, and reducing emissions. An additional twenty A5 and A6 Avant models are being added to the fleet of cars with the technology, and fifty more stop lights will be fitted with modules. If you're in Inglostadt and you want to save time and money on your commute, follow the Audis.

[Source: Audi]


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  • 20 Comments
      • 6 Years Ago
      As if people with expensive, technology-laden cars don't have enough excuses to not look where they're going already.
      • 6 Years Ago
      I like this concept, although lots of good thoughts about glitches and dangers have been pointed out above. What this article made me think was: how long until in the name of safety someone proposes that the stoplight computers communicate with our vehicles' engines and we're not driving at all!
      • 6 Years Ago
      WANT
      • 6 Years Ago
      whats wrong with just having the timers on the lights saying when they are going to change like i have seen in Europe? useful for EVERYONE - and keeps people looking up instead of down at the dash
      • 6 Years Ago
      The author of the article managed to misspell the name of Audi's hometown twice! It's INGOLSTADT! Looking up Audi on Wikipedia could have helped with the spelling.

      Apart from this - great idea, great system, it's been covered in depth in the German auto press.

      Phil
      Düsseldorf/Germany
      • 6 Years Ago
      @ zamafir
      I believe this is meant for the trafic lights still a mile away. Not the one's you can see. So by the time a block of cars gets there, it's green and clear of the previous block.

      If you can survive the road rage from the maniacs behind you, it will even out the flow of trafic. And that is the intent of this system.
      • 6 Years Ago
      Sounds promising, but I have little hope of ever seeing it here. The lights in LA are mostly on timers without any kind of synchronization from intersection to intersection. They can't even tell if there isn't any traffic in one direction vs. the other (for many), so you wind up waiting at a red light for 5 minutes at 3am while no traffic crosses in front of you. A good lot of city congestion is caused by each intersection operating independently of the others, instead of allowing traffic to flow through several blocks in a direction before bringing it to a red light. These technologies (vehicle sensing, and computer synchronization of sequential lights) have been out for years, but they are not implemented because none of them generate tax revenue/tickets and would cost money to install. I see no reason then, why they would bother with this new system when things are already so antiquated--at least here.
      Robert
      • 6 Years Ago
      If you approach an intersection at 40 mph because you can predict a green light, then any slob who runs the red light across the intersection, or a jaywalker, or slowpoke, or someone unexpectedly caught in the middle of the intersection -- is dead meat. This is going to kill people, all in the interest of saving two minutes on the way to work?
        • 6 Years Ago
        @Robert
        ""This is going to kill people, all in the interest of saving two minutes on the way to work?""

        Well said.

        This is absolutely the most murderously stupid idea ever.

        Even Europeans, even...Gasp! Germans... can make mistakes at an intersection, or have a car malfunction in the middle of one.
      • 6 Years Ago
      mmm a diesel Audi...
      • 6 Years Ago
      I'm a huge audifanboi and even i think this is retarded. :/ - any skilled driver will be able to acertain how quickly they'll need to pass through.
        • 6 Years Ago
        I'm not sure how you figure that.
        Unless you know the intersection well and maybe you can see a yellow light for the other street, a red looks like a red.
        Elementary physics says you have to know two things in order to hit the intersection just as it turns green:
        1. How far away you are (a skilled driver can tell)
        2. When it's going to change (often no-one can tell)
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