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Traffic light triggers
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2015/1/30 0:26
From Kleinburg
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Hey everyone,

I'm curious has anyone ever used a traffic light trigger on their vmax? Does it work or is it just a gimmick?

Even though the Max ain't no small bike. I constantly find myself sitting at traffic lights that never change. Around here, you gotta have a big enough vehicle to set off the magnetic field which tells the traffic light that someone is sitting there.

They sell what's Called "traffic light trigger" which is essentially a really powerful magnet that you mount on the bottom of your bike. The theory is that when you roll over you will set off that magnetic field and trigger the traffic light to cycle.

Has anyone tried these? Is it just a gimmick? For $7 online its not the cost but i just don't wanna waste my time if it doesn't work.

Finally, I'm not that technically Saavy. Are there concerns with mounting a strong magnet on the bottom of your bike? I know you wouldn't want to pass a magnet near the ABS sensor but are there other concerns that anyone can think of?

As always, I'm looking forward to hearing what you guys think

Posted on: 2015/2/2 2:34


Re: Traffic light triggers
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My personal belief is that they are mostly just a gimmick. As I understand it, most light triggers are wire loops embedded in the pavement, which sense vehicle mass, not magnetic fields. Therefore magnets wouldn't help. I have heard, but have not confirmed, that putting your kickstand down on one of the wires will trigger it.

Posted on: 2015/2/2 6:03
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Re: Traffic light triggers
Just popping in
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It's times like these that I wish I paid more attention in physics class!

You are correct, those "traffic induction loops" as they are called are essentially a wire in the pavement. A current is passed through and creates a magnetic field which gets interrupted when a vehicle enters the space. From what I have read, its the mass of the vehicle which interrupts the field (not the weight). The magnetic field acts like a giant metal detector and the mass of metal (your car) changes the magnetic field and the signal triggers the traffic light to cycle.

I wonder if I can somehow put this to the test. There is a light right near me that I always get stuck at. Maybe once the weather gets better ill go out there and test the different methods.

Posted on: 2015/2/2 20:09


Re: Traffic light triggers
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Put your kickstand down on the wire.

Posted on: 2015/11/2 1:55


Re: Traffic light triggers
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It's been my experience that the light gets triggered when I stop near to the 'edge' of the sensor area. I've found that if I stop in the middle of the rectangle sensor area, nothing happens. However, if I stop near the left or right side, then the sensor gets tripped. Having read the posts above (thanks guys!), it makes sense that this is why I find more success.

Posted on: 2015/12/28 15:58






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