Traffic Lights???

Question

I've heard that when your pulling up to a red light and you flash your brights at it, it will cause the light to turn green...is this true???

Answer 1

The answer about the weight of the vehicle was incorrect. Actually, there is a big loop of wire in the pavement that detects metal and tells the controller to change the light.

Answer 2

I found this answer at the link below- I think it covers it completely.

"Does flashing your bright lights at a traffic signal light when it is red change it to green faster?

No – absolutely not. The vast majority of traffic signal lights are controlled by inductive loops, which are electromagnets buried just under the road's surface. You can usually see the thin, black lines in the road at intersections. These electromagnets react to the presence of iron – and nothing else. When enough iron is inside the loop, the traffic signal controller box initiates its cycle for the light. Motorcycles, small vehicles, and vehicles raised above the ground (big 4x4s) do not register high enough to cause many lights to cycle. You can get a Signal Sorcerer® traffic light changer (often referred to as a motorcycle traffic light changer) and attach it to your bike and then the inductive loops will detect it. "

Answer 3

No, there is a sensor on the light pole that picks up a special strobe frequency on emergency vehicles. This is usually limited to fire and ambulance vehicles as police cars don't normally wait for the traffic to clear out of an intersection before approaching it. Some people also belive that if you have a high pitched horn you can honk and change the light, but this is also not true, you just look dumb honking at nothing.

Answer 4

Here's how I use the weight sensors. Not every intersection seems to have one, but the ones on my usual route work a treat. I pull up to the red light, and just a foot or so into the crosswalk. Then I reverse a foot. Light starts to change within seconds.

Answer 5

No, there are some lights that have strobe sensors for emergency vehicles. Your brights do not emit enough direct light to trip the sensor.

Answer 6

Right church, wrong pew- you are on the right track but flashing your headlights won't do the trick-Ah but there is more ,come closer-LOL! This is kind of cool if you are a scoff law,you can get a portabile hand held device from CANADA that will do this -it is legal to get it shipped but you CAN'T use it -HA HA! I kid you not do some reasearch you will find it and it ain't that expensive either!

Answer 7

rofl no.. some lights are activated by headlights, like late at night when the traffic flow is light, sensors pickup your headlights coming down towards the lights and it changes at that point, but many lights just have weight sensors when you pull up to the lights. there are no tricks to traffic lights.

Answer 8

I think that only workd for cops, ambluances, and fire trucks, because their lights are much stronger and brighter than the ones on our car. But who knows you should try it when little to no people and/ or cars are around.

Answer 9

in some light ya it is true cause they run off a sensor and when you flash your light it triggers the sensor.

Answer 10

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