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· Premium Member
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Vrod-Mike said:
No scam there. Like you said it's a magnet that triggers the underground traffic light sensors.
Well.. I bought something similar that the local HD shop was selling.. I put it on the plate under my fuel cell so it is as low as I could really get it without it hanging down someplace stupid.. I can trigger about 50% of the lights in the DFW area.. there are some that even with 3 of us riding (all with these magnets) can't trigger yet a car still triggers them.

Nothing worse than sitting at a light that won't recognize you as it goes through several rotations skipping you. Long story short, I am not sure they did ANYTHING for me.
 

· Color me Gone
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Rich in plano most have gone to IR sensors and they work very well even with a bike. I do know the magnet helps on those that you see the cuts in the road, the trick is to pull directly over the groves so the magnet is sitting right on top of them. Some times even slamming your foot down is enough to set them. If a light cycles and has not turned green my direction I look both ways and go. As long as done safely I have never had a problem.
 

· Wet Blanket
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Max said:
Rich in plano most have gone to IR sensors and they work very well even with a bike. I do know the magnet helps on those that you see the cuts in the road, the trick is to pull directly over the groves so the magnet is sitting right on top of them. Some times even slamming your foot down is enough to set them. If a light cycles and has not turned green my direction I look both ways and go. As long as done safely I have never had a problem.
Same goes here in Southern California. On occasion, I will drop the jiffy stand on the stubborn lights and it seems to do the trick.

As far as the magnets, I thought I saw something debunking those but I can't remember where.
 

· Banned
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Max said:
Rich in plano most have gone to IR sensors and they work very well even with a bike. I do know the magnet helps on those that you see the cuts in the road, the trick is to pull directly over the groves so the magnet is sitting right on top of them. Some times even slamming your foot down is enough to set them. If a light cycles and has not turned green my direction I look both ways and go. As long as done safely I have never had a problem.
:them: when I rode on the street:hidesbeh: .
 

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Max said:
Rich in plano most have gone to IR sensors and they work very well even with a bike. I do know the magnet helps on those that you see the cuts in the road, the trick is to pull directly over the groves so the magnet is sitting right on top of them. Some times even slamming your foot down is enough to set them. If a light cycles and has not turned green my direction I look both ways and go. As long as done safely I have never had a problem.
IR would be nicer.. I have some real stubbor ones here.. Even when you are right over the cuts, they won't trigger.. Real PITA, and I have been tempted to just go some times.. I may try that and tell the cop.. "Max said it was okay!! " LOL! :D
 

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Anything heavier than a motorcycle puts out a magnetic field big enough to set off the sensor for red lights, for the lights that only change when there's a car present on the sensor.

If you're on a bike, you're screwed when you're at a light like that unless you want to go way out of your way to get through the light (take a right, turn around and take a right to go straight)

I bought one for my uncle... he said it worked 50% of the time... better than nothing I suppose... I'm too lazy... I just run them..
 

· John
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If you think about it (for a left turn exit ramp as an example) the "installer's" of the underground sensors are going to put them closer to the left tire track (as in car/truck) than toward the middle or right side of the lane.

And in that case what I've noticed is that if I pull up into the left tire track of the exit ramp my bike will trigger the sensor.

For a right turn with a traffic light on your right (if you can't turn on red) the right tire track will trigger the light.
 

· Premium Member
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The other day I was at a particularly stubborn light by my house.. My son was also on his bike.. We sat there.. and waited.. Usually a car will come up and trigger it, but this day after waiting the car stopped on the other side of the railroad tracks way before the sensor.. Just sat there and sat there.. Even with us waving the person up.. After 5 minutes of that crap and 3 light cycles.. We finally made a right turn and did a u-turn down the street where we could..

Of course, by the time we get back to the light, the car moved up and triggered the light and we had to stop again and wait.. At least this time, other cars triggered this light for us.. I hate that intersection ! :chair:
 

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Tennessee actually passed a law recently that will allow a rider to proceed thru a red light if the bike doesn't trigger the sensor. Common sense prevails here....no traffic, as long as it's safe, AND there isn't a car next to you that can trigger the light. Just FYI
 
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