Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!orstcs!uther.CS.ORST.EDU!pvo
From: pvo@uther.CS.ORST.EDU (Paul V O'Neill)
Newsgroups: sci.electronics
Subject: Re: Car Detectors for Traffic Lights
Message-ID: <10996@orstcs.CS.ORST.EDU>
Date: 6 Jun 89 18:03:31 GMT
References: <18811@cup.portal.com| <3185@kitty.UUCP> <456@antares.UUCP> <722@occrsh.ATT.COM>
Sender: usenet@orstcs.CS.ORST.EDU
Reply-To: pvo@oce.orst.edu (Paul V O'Neill)
Organization: Oregon State Univ. - Oceanography
Lines: 24

In article <722@occrsh.ATT.COM> rjd@occrsh.UUCP (Randy_Davis) writes:
>
>  So, if anyone knows a way to fool a light into thinking there is a larger
>metal mass above the sensor than there actually is, please post!!!
>
>Randy Davis					UUCP: ...(att!)ocrjd!randy
>						      ...(att!)occrsh!rjd

Here are 2 methods that work for me on a small motorcycle.

	1) High speed crossing of the coil followed by *hard* braking.
	   (directly over asphalt cut of a long & rectangular sensor)
	   (down the middle of a diamond shaped detector)
	[Careful here -- you won't have maximum braking power available
	because of the oil and grime that accumulates at the intersection.]

	2) If 1) fails.... put the side stand down on top of the 
	   asphalt cut.


Paul O'Neill                 pvo@oce.orst.edu
Coastal Imaging Lab
OSU--Oceanography
Corvallis, OR  97331         503-754-3251