Traffic Light sensors - Sportbike Forum: Sportbike Motorcycle Forums
Reply
 
LinkBack Thread Tools Display Modes
post #1 of 20 (permalink) Old 09-13-2005, 06:57 AM Thread Starter
 
Join Date: Sep 2005
Posts: 22
Traffic Light sensors

Any hints or tricks on how to get the dang traffic light sensors to turn the light green when your the only person at the intersection?
Winfield is offline  
Sponsored Links
Advertisement
 
post #2 of 20 (permalink) Old 09-13-2005, 07:03 AM
 
Join Date: Jun 2000
Posts: 1,991
Hi Winfield-

There is anecdotal evidence that you can ride your motorcycle along the "seam" that contains the sensor, but that is often not enough for the mechanism to notice the combined weight of you and the bike.

Eventually the light will "time-out" to allow pedestrians and other "lightweight" folks to cross the street. There are some traffic signals in my area that I can only describe as magical...they have a long green for the perpendicular traffic but can sense the moment another vehicle approaches. They turn green for a few seconds and then revert. I wish all signals could be built with the same technology.

~ Blue Jays ~
Blue Jays is offline  
post #3 of 20 (permalink) Old 09-13-2005, 07:37 AM
 
Join Date: May 2005
Posts: 675
I was told by a cop that when comming to the light if no other traffic is there and you think youll get stuck flash high and low beams, to help trip lights with optical sensors. As Blue says ride and stop on the seams if there are any for wt sensors... if no seams are visible use the left side of the lane.

That's what I was told!

GL
mainerdr is offline  
 
post #4 of 20 (permalink) Old 09-13-2005, 07:45 AM
 
Join Date: Mar 2005
Posts: 624
I usually don't even bother. I'll wait until a reasonable time has passed, check to make sure everything is clear, and head on through. Of course, a lot also depends on the intersection itself. There have been times where I elected to wait for a car to come up behind me, as the intersection was just too fucked up... Converesly, on some lonely country road, where you can easily see any traffic, I don't wait too long....
Mystery Squid is offline  
post #5 of 20 (permalink) Old 09-13-2005, 07:45 AM
 
Join Date: Mar 2004
Posts: 8,798
Most of those sensors dont work on weight. They are a coil under the pavement.
As a metal car passes over the coil, it generates current in the coil, which the computer sences. Now a bike being a whole lot less metal then a car, and being aluminum instead of steel, it doesnt generate a whole lot of current. So you got 2 options to increase the ammount of current generated.
1. Pass over the sensor much faster. This is amusing, but difficult since you dont know where the actual coil is burried.
2. Attach a magnet to the bottom of your bike. Yeah, you might add a few ounces, but it should do the trick.



Vash is offline  
post #6 of 20 (permalink) Old 09-13-2005, 08:29 AM
 
Join Date: Aug 2005
Posts: 980
I ride to work at 3am, usually not much traffic around, just look around to make sure no one is around, then run the reds.
slick1537 is offline  
post #7 of 20 (permalink) Old 09-13-2005, 11:38 AM
 
Join Date: Aug 2004
Posts: 6
And if all else fails, throw her in neutral, put the kickstand down, get off, and go hit the button to cross the road
nalius is offline  
post #8 of 20 (permalink) Old 09-13-2005, 01:17 PM
Registered User
 
bittersweetryan's Avatar
 
Join Date: Jun 2005
Location: Oak Creek, WI 53154
Posts: 423
Send a message via AIM to bittersweetryan Send a message via Yahoo to bittersweetryan
Quote:
Originally posted by Vash
...2. Attach a magnet to the bottom of your bike. Yeah, you might add a few ounces, but it should do the trick.
Anybody try this?

On my way to work in the morning motorcycles can use the carpool lanes on metered ramps. The ramp I get on usually has a huge line of cars but the carpool lane is empty so I use that, but I never get the green so I just end up going. I get a ton of dirty looks because people think i'm running the red, but I know its never gonna change!

"Let us celebrate our arrangement with the adding of chocolate to milk."
bittersweetryan is offline  
post #9 of 20 (permalink) Old 09-13-2005, 02:42 PM Thread Starter
 
Join Date: Sep 2005
Posts: 22
Thanks everyone for the ideas. The last couple of times I have had to just "run the reds". I might try the magnet trick. Thx.
Winfield is offline  
post #10 of 20 (permalink) Old 09-13-2005, 04:06 PM
 
Join Date: Mar 2004
Posts: 136
My solution was to run it, Get a ticket and fight it in my trial.

I had a lot of experiece being an Architect for a Fast food chain where loop detectors are installed in the drive thru lanes and knew what the problem was before crossing. I was found NOT Guilty BTW.
In my preparation for trial, the City engineer I met said to approach the intersection over one side of the loop. You can usually see where the loop is from the sawcuts made when they installed the detector loop wire. Most City detectors are retrofits and have sawcuts. For my particular light, aligning over the wire still did not work. The problem with the loops is they usually extend past the stop stripe because people stop past the stop it to see on-coming traffic.
If set too sensitively (usually what is needed to detect a bike) detector loops will also pick up traffic in the crossing lanes and "Lock up". If not sensitive enough even, magnets, kickstands and bike alignment over the loop wire will not work.
The best thing to do is contact your City's traffic engineer and have one of the engineers meet you at the light giving you problems and calibrate it to detect you. For the light I had a problem with, the calibration was set to max sensitivity to get it to work. They may not be willing to do this because of the lock up issue. My city won't recalibrate all the lights, only on a case by case basis. Until I complain about a specific light, the calibration is set "for cars, not bikes". The City I live in is also switching to video detection which works way better than detector loops.
Snake is offline  
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the Sportbike Forum: Sportbike Motorcycle Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page
Display Modes
Linear Mode Linear Mode



Posting Rules  
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome