It's too light ;) - BMW G310 R/GS Forum
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post #1 of 16 (permalink) Old 04-06-2018, 11:04 AM Thread Starter
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It's too light ;)

After sitting through 3 light changes at a light with a turn arrow, I realized that I was not heavy enough to trigger the green light... I pulled way up hoping the car behind me would pull closer to trigger it but he was "giving me space" I had to ultimately turn and go a different was since the green was only triggered by the presence of a car...


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post #2 of 16 (permalink) Old 04-06-2018, 11:23 AM
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Happens to me all the time. Luckily in Washington I'm allowed to treat it like a stop sign and go after one cycle. Ohio you are not so lucky. But this article really helped me to trigger the sensors:

How Motorcycles Get Traffic Lights to Change

Last edited by G310RSeattle; 04-06-2018 at 11:27 AM. Reason: typo
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post #3 of 16 (permalink) Old 04-06-2018, 12:42 PM
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Yeah - it's not weight, it's mass. Not enough ferrous metal to generate a current in the loop to trigger the light change. In addition to what the article referenced above states, Stopping and re-starting your engine will sometimes wake the sensor up - the electrical activity disrupts the loop.

Oklahoma used to have pressure treadles that actually were activated by weight (they looked like a black space bar set into the road with a metal frame around them). I "mastered" the technique of standing on the pegs as I approached and bouncing my butt on the seat as the rear tire went across the treadle.

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post #4 of 16 (permalink) Old 04-06-2018, 01:49 PM
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I work in a building with gates to the parking lot. The pressure plates are weight sensitive and my K75 had no problem setting off the gates.

My 310 is not heavy enough so I have to go around the gate on my way in, in the morning and in the evening when I leave I have to go around the gate on an in-bound gate to get out.

I have to get up the in-bound ramp pretty quick just in case a car is entering the parking lot...

One option is to come in on a weekend day with a battery powered sawsall (SP?) and trip an out-bound gate...
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post #5 of 16 (permalink) Old 04-07-2018, 12:10 AM
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Yep, had to run a red light the other day as my bike did not trigger the induction coil. As far as I know it's ok to do so if the lights don't change after 2-3 cycles as they are classified as defective lights.
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post #6 of 16 (permalink) Old 04-07-2018, 10:02 AM
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Reading this thread makes me feel good that we have timed-lights here.
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post #7 of 16 (permalink) Old 04-07-2018, 10:45 AM
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I did a bit of digging in Virginia's laws and came up with this:

" 46.2-833
B. Notwithstanding any other provision of law, if a driver of a motorcycle or moped or a bicycle rider approaches an intersection that is controlled by a traffic light, the driver or rider may proceed through the intersection on a steady red light only if the driver or rider (i) comes to a full and complete stop at the intersection for two complete cycles of the traffic light or for two minutes, whichever is shorter..."

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post #8 of 16 (permalink) Old 04-07-2018, 12:12 PM
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Yes, it is a problem with a lot of traffic signal lights here in the USA. The units are getting older and they can go out of calibration over the years. It is expensive to fix because the part that goes out of calibration may be under the pavement and not in the above ground control box. Even 750+ pound Harley Hogs have problems at some of the signals in my little town.

https://www.fhwa.dot.gov/publication...s/08may/02.cfm
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post #9 of 16 (permalink) Old 04-07-2018, 01:08 PM
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Super! Thanks for the link.

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post #10 of 16 (permalink) Old 04-08-2018, 04:10 PM
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In our town we have gone away from in ground loops, too many failures.
Now our intersection traffic signal lights are controlled by overhead proximity cameras.
Work well until big fat, wet snowflakes jam them up. Even though they are heated, sometimes
it takes a bit for them to get back on track.
Space permitting, traffic circles, roundabouts are the best.
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