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Approves Bill Allowing Motorcycles to Run Red Lights
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<blockquote data-quote="ionbeam" data-source="post: 831241" data-attributes="member: 277"><p>The 'in pavement' sensors are a wire loop. The loop has a specific AC frequency running around the loop which is monitored by a computer. When a significant sized FERROUS object rolls over and into the loop it causes a significant change in the AC frequency. The computer identifies this change to mean a vehicle is present. When your ALUMINUM motorcycle rolls over the wire and into the loop the frequency change is substantially less. For your motorcycle to be detected the computer must be programmed to have significantly better sensitive to small frequency changes. There is reluctance to do this because the more sensitive setting can cause adjacent lane sensing errors.</p><p></p><p>Over the last decade there have been improvements in loop design which will improve detection, will reduce adjacent lane falsing and be more accommodating to large trucks whose trailers can be 3-5' above the wire loop. The new loop design is supposed to reliably detect bicycles without causing adjacent lane falsing. These intersection detection systems can easily start at $1 million and go up from there so there hasn't been a rush to upgrade existing systems.</p></blockquote><p></p>
[QUOTE="ionbeam, post: 831241, member: 277"] The 'in pavement' sensors are a wire loop. The loop has a specific AC frequency running around the loop which is monitored by a computer. When a significant sized FERROUS object rolls over and into the loop it causes a significant change in the AC frequency. The computer identifies this change to mean a vehicle is present. When your ALUMINUM motorcycle rolls over the wire and into the loop the frequency change is substantially less. For your motorcycle to be detected the computer must be programmed to have significantly better sensitive to small frequency changes. There is reluctance to do this because the more sensitive setting can cause adjacent lane sensing errors. Over the last decade there have been improvements in loop design which will improve detection, will reduce adjacent lane falsing and be more accommodating to large trucks whose trailers can be 3-5' above the wire loop. The new loop design is supposed to reliably detect bicycles without causing adjacent lane falsing. These intersection detection systems can easily start at $1 million and go up from there so there hasn't been a rush to upgrade existing systems. [/QUOTE]
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Approves Bill Allowing Motorcycles to Run Red Lights
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