Probably SIAL as I havent been on SN much over last week or so.

http://www.detnews.com/2003/commutin...a01-307303.htm
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Tired of sitting at endless red lights? Frustrated by lights that turn from green to red too quickly, trapping you in traffic?

Now anyone can breeze through congested intersections just like the police, thanks to a $300 dashboard device that changes traffic lights from red to green, making nasty commutes a thing of the past and leaving other drivers open-mouthed at your ability to manipulate traffic
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Simon.

Hello

You used to be able to do that with a remote control! As there was a scheme a few years ago where buses could change traffic lights, but they just used standard infra-red signals!

Steve.

The one along St Johns Rd in TW just works by something driving over a sensor - so if you're in a hurry just use the bus lane :D

Or you could steal the appropriate device from the front of a bus....... not that I know anyone who did that while at uni of course!