Stop! The traffic light is turning red!

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	Stop! The traffic light is turning red!

kaferico

5-11-2009 8:09 AM

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tags:

math, awareness, applications

kaferico says:

There are so many people driving vehicles on the streets but you rarely see chaotic events due to traffic. Why? Mathematics play an important role controlling traffic lights by helping traffic controllers optimizing the signal changes of traffic lights. Click the link below to learn more about this interesting application of mathematics and traffic lights.

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<div style="margin: 12px 0px; font-family: arial; color: #333333; background: #ffffff; border: solid 4px #e5e5e5; width: 100%; clear: left;"><div class="CM_CTB_Content_Wrap" style="margin: 0px; padding: 0px;background-color: #ffffff;"><div style="border-bottom: solid 1px #dcdcdc; white-space: nowrap; margin-bottom: 8px; background-color: #eeeeee ;background-image: url(http://clipmarks.com/images/source-bg.gif); background-repeat: repeat-x; height: 24px; line-height: 24px; vertical-align: middle; padding-bottom: 4px; color: #666666; font-size: 10px;" ><a href="http://clipmarks.com/clip-to-blog/" title="see clips that are hot right now"><img src="http://content.clipmarks.com/blog_embed/0eb2749a-90ef-4d9c-b217-6712930962ff/E8C1A863-BF34-4990-9CBD-6289E098A12D/" alt="" width="19" height="19" border="0" style="vertical-align: middle; margin: 0px 4px; display: inline; border: none; float:none;" /></a>clipped from <a title="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm" href="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm" style="font-size: 11px;">news.bbc.co.uk</a></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm">
<DIV class=sh>Welcome to the red light district </DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm"><div align="center"><img src="http://content6.clipmarks.com/blog_cache/news.bbc.co.uk/img/66E29714-7FB0-4B0A-A06D-369F14970AB4" alt="Traffic light" /></div></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm"><B>There's nothing more frustrating than sitting at a red light, watching 
smiling drivers on the other side of the road speed past.</B> </blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm"><DIV>HOW ARE TRAFFIC LIGHTS CONTROLLED?</DIV></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm">The first uses data collected on traffic flow in a certain area to calculate 
timings for the lights, running the red lights to a strict timetable.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm">
<P>The other method is a little more hi-tech. </p> <P>Coiled under the tarmac at junctions and crossroads across the UK, are loops 
of cable which act as metal detectors as cars pass over them. </p> <P>This information is passed to a central computer, which uses complex 
algorithms to calculate the optimal time each light should spend on each colour, 
ideally creating a smooth flow of traffic throughout the network. </P></blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm">Mathematical algorithms, and futuristic operations centres can only get you so 
far.</blockquote><div style="height: 2px; font-size: 2px; background: #dcdcdc; border-bottom: solid 1px #f5f5f5; margin: 2px 4px;"></div><blockquote style="text-align: left; padding: 0px 8px; margin: 4px 0px 8px 0px; background: transparent; border: none;" cite="http://news.bbc.co.uk/today/hi/today/newsid_7998000/7998397.stm">"There is no way of getting down to a neat mathematical formula.</blockquote></div><div style="margin: 0px 6px 6px 4px;"><table style="font-size: 11px;border-spacing: 0px;padding: 0px;" cellpadding="0" cellspacing="0" width="100%"><tr><td style="background:transparent;border-width:0px;padding:0px;">&nbsp;</td><td align="right" style="background:transparent;border-width:0px;padding:0px;width:107px" width="107"><a href="http://clipmarks.com/share/E8C1A863-BF34-4990-9CBD-6289E098A12D/blog/" title="blog or email this clip"><img src="http://content9.clipmarks.com/images/c2b-foot.png" border="0" alt="blog it" width="107" height="17" style="border-width:0px;padding:0px;margin:0px;" /></a></td></tr></table></div></div>

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