Quote Originally Posted by Doppelgänger
Some cities/intersections have i.r. sensors to detect oncoming emergency vehicles (that have i.r. transponders) to help traffic flow for said emergency vehicles. There was a news article I read where someone attained one of these i.r. transponders for their personal vehicle and proceeded to funk traffic up during rush hour because it was throwing the timing of the lights off. Not all intersections use this technology though. Also, there are measurements in place to keep most of the public from being able to do this by means of different/dual frequency i.r. units.

And as others have said, other lights are either on a strict timer, a magnetic sensor or a combination of both.
x2.

Its pointless trying all these tricks to possibly get the light to change faster. Just be patient and wait for it to change like everyone else.