EcoGeek

Green lights forever

Never wait for a red light again - hit every green. Sounds tempting, doesn't it? Audi is currently testing a device called Travolution that does just that. The in-car gadget searches for wireless signals from nearby traffic lights and calculates how fast the driver should go in order to sail right through.

Special transmitters fitted inside traffic signals send messages to cars in the vicinity letting drivers know of the time remaining until the next green phase. When everything syncs up properly, drivers know how fast to drive in order to make it through before the light turns red.

The system, which was developed by Audi and traffic management experts in the carmaker's German hometown of Ingolstadt, improves synchronization of traffic light networks to reduce stopping times. It also reduces the number of actual stops needed by creating a communications link between cars and the traffic light network.

Reducing stops will reduce fuel consumption and pollution, giving a whole new meaning to going green.

Via Daily Mail and Wired

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comments from our community

Showing 1 - 15 of 17 comments

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  • Posted by Rock Sat Oct 25, 2008 11:26pm PDT
    This might be a good idea at 3am when the streets are bare, but I don't think it will work during normal driving hours. How does it take into account for other drivers at the light that may or may not go at a speed that coincides with yours? Like people blaming the GPS for sending them into a field (or a wall, etc...) I see people blaming the Travolution device if they hit someone or something because they were told to go the optimum speed. It seems like a great idea but it would depend on how it's implemented. Safety above savings.
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  • Posted by TLK Sun Oct 26, 2008 4:29am PDT
    I agree with the previous post...I don't think this keeping track of green lights sounds practical. A nice idea in fantasy, but in the reality of day to day driving not practical, and worse, sounds like it could be dangerous. (Just another possible point of distraction for a driver...)
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  • Posted by harleygrip Sun Oct 26, 2008 5:38am PDT
    How about a device that turns a light green when you are approaching it. Instead of stopping for a light that nobody is at! What a waste.........
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  • Posted by Charlie D Sun Oct 26, 2008 8:00am PDT
    There *are* devices that can turn a red light, green. Police use them. Not all traffic signals are equpped with the receivers though. It's like an automatic garage door opener.
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  • Posted by STEVE Sat Nov 1, 2008 7:44am PDT
    much Greener know!
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  • Posted by Jay Lee C Mon Nov 3, 2008 4:10am PST
    Uh, or we could just learn to slow down at stop lights and not crash into one another because we don't want to obey traffic laws. And people wonder why I don't drive.
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  • Posted by jmcgowan_2000 Mon Nov 3, 2008 9:27am PST
    I live in Phoenix, AZ and I could use this ALL THE TIME. When I lived in Boston, MA this would have been useless because of all the traffic 24/7. It all depends on where you live, and how you drive.
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  • Posted by lmc0425 Mon Nov 3, 2008 9:42am PST
    but and i know this is far featched but what happens if say you have two of these cars that have this set up coming at the same time and what does it automatically change the other green lights red then change then back to green this sounds like a traffic accident waiting to happen sorry guys but coerrect me if i am wrong.
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  • Posted by Aznur Mon Nov 3, 2008 9:39pm PST
    The technology is stable already in London for the buses.
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  • Posted by audio_uphoria Mon Nov 3, 2008 9:40pm PST
    I agree with some of the people on here. It sounds good on paper but will fail in real life situations. Just look at the back up cam that the car companies were trying to push. Nice try audi.
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  • Posted by Alyssa S Mon Nov 10, 2008 4:23am PST
    Wow, this sounds like a tremendously BAD idea to me. "When everything syncs up properly, drivers know how fast to drive in order to make it through before the light turns red." Um, OK...I have a feeling the majority of drivers would use that as a cue to drive much faster, rather than slow down, or even just adjust speed accordingly.
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  • Posted by Mar Michael Mon Nov 10, 2008 4:39am PST
    They actually had something like htis in Houston, TX in the mid 60's. The traffic lights instead of having a yellow light had a countdown showing how many seconds left till it turned red or green. Great idea, especially is the whole street has them. Probably cheapter too than putting a receiver in every car.
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  • Posted by David M Mon Nov 10, 2008 4:44am PST
    Rock's right: during normal-driving hours, this would be nightmarish, thanks to the increased potential for car crashes!
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  • Posted by sweetness Mon Nov 10, 2008 5:16am PST
    what about when you have other people sittiing at the light that takes their own sweet time of getting out of the way? Do you have a device for that too? Will this make people less observant of whats going on at these intersections and think ok I have a green light.
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  • Posted by robbobgreer Mon Nov 10, 2008 5:52am PST
    I still like the idea that I saw in Germany for traffic signals. While stopped at a red light, the yellow light will signal as a "ready, set" just before the green light goes on. This may be a little off topic but it helps move traffic along and would be useful if you were approaching a red light.
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