<html> <head> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"> <meta name=Generator content="Microsoft Word 10 (filtered)"> <style>  </style> </head> <body lang=EN-US link=blue vlink=purple> <div class=Section1> Here you have the first cycle of comments and dialogue set off by this video submitted by its producer/director Martin Cassini two long days ago, which (video) as you may recall is posted along with a couple of hundred others in our New Mobility Video Library, starting at <a href="http://www.youtube.com/group/NewMobilityAgenda">http://www.youtube.com/group/NewMobilityAgenda</a>. You may wish to add yours either there or right here. This is at the very least a pretty dicey set of questions that Martin poses in his video, not least when he takes Hans Monderman’s great ideas and says, hey! why not here right in the middle of London?   But the commentary takes this on directly. (And as a not always so perfectly respectful urban cyclist, I do like that ‘pointless reds’ remark.)   In fact if you click to the famous video which you will find in the Global South Library at <a href="http://www.youtube.com/watch?v=T8Doy_7sOoM">http://www.youtube.com/watch?v=T8Doy_7sOoM</a> you can see how something very much along those lines works at one busy intersection in India. In this context I would also point you to Paul Barter’s lively commentary on the full Global South collection, which you can find at http://urbantransportasia.blogspot.com/2006/08/naked-streets-and-safe-chaos.html .   In conclusion, it just has to be said that we live in an interesting time. Here is YouTube started for reasons that are planets away from what brings us all here together, and yet . . . and yet.   To me it suggests that you too (that’s a joke? Sorry!) should get involved.   ericbritton       <table class=MsoNormalTable border=0 cellpadding=0 align=left width="100%" style='width:100.0%;margin-left:6.75pt;margin-right:6.75pt'> <tr> <td width="75%" style='width:75.42%;padding:.75pt .75pt .75pt .75pt'> <h2>All Comments (31 total)</h2> </td> <td nowrap style='padding:.75pt .75pt .75pt .75pt'> <a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('main_comment2', '', false); return false;">Post a new comment</a> </td> </tr> <tr> <td style='padding:.75pt .75pt .75pt .75pt'>   </td> <td style='padding:.75pt .75pt .75pt .75pt'>   </td> </tr> </table>   <a name=uX-rfCqzhU4 onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=uX-rfCqzhU4', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU">mark as spam</a> <a href="http://www.youtube.com/user/quasimojo">quasimojo</a> (2 days ago) A great video - I agree with the need to reduce congestion and keep traffic moving, but I'm not entirely sure I agree with the position that all traffic lights should be removed. IME of London drivers and roads, if lights were removed then a lot of junctions would become unpassable and gridlocked - because users won't/don't care for other road users at all. (continued) (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_uX-rfCqzhU4', 'uX-rfCqzhU4', false); return false;">reply to this</a>)   <a name=9hRnXlCf7wM onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=9hRnXlCf7wM', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/quasimojo">quasimojo</a> (2 days ago) (cont). It is this selfish aspect to human nature that I think your film overlooks. If we were all as open-minded as you then London's roads without lights would be fine - but alas we're not :( I like the right-turn-on-red policy in the US however.... seems like a good (and practical) compromise. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_9hRnXlCf7wM', '9hRnXlCf7wM', false); return false;">reply to this</a>)   <a name=kgZc66lCGvs onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=kgZc66lCGvs', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) Thanks for your thoughtful comments. But I think that people relax and behave fine when they see a reason for slowing or stopping, i.e. for a pedestrian or motorist who was there first; the opposite happens when we're treated like zombies and forced to obey remotely-programmed lights that stop us in our tracks and often make us wait for no reason. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_kgZc66lCGvs', 'kgZc66lCGvs', false); return false;">reply to this</a>)   <a name=QgFQoOHKuss onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=QgFQoOHKuss', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/quasimojo">quasimojo</a> (2 days ago) That's fine if traffic has the opportunity to flow but is impeded by red lights, but what about London's congested roads? Box junctions are consistently blocked by road users, stopping traffic from flowing in the other directions. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_QgFQoOHKuss', 'QgFQoOHKuss', false); return false;">reply to this</a>)   <a name=WbfCJp3kMhE onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=WbfCJp3kMhE', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/quasimojo">quasimojo</a> (2 days ago) (cont) If road users are so considerate of other road users then why do they do it? I suggest that it's because road users are selfish by default and need enforcement. Until intelligence can be legislated for, you're always going to have to suffer at the hands of the lowest common denominator. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_WbfCJp3kMhE', 'WbfCJp3kMhE', false); return false;">reply to this</a>)   <a name="4NS_uZJaZFI" onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=4NS_uZJaZFI', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) Again, thanks for your comments, but ultimately your logic leads to traffic controls for pedestrians in busy shopping centres and station concourses. If we're fit to filter as peds, why aren't we fit when we're peds on wheels? Of course we're fit. Remove the controls and you remove the aggravation, and the simple, instinctive priority rule of filter-in-turn will work wonders. Also, why force the majority down to the level of the lowest common denominator? I prefer the idea of raising standards! (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_4NS_uZJaZFI', '4NS_uZJaZFI', false); return false;">reply to this</a>)   <a name=kpPlsKMZw9I onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=kpPlsKMZw9I', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) The human default setting is enlightened self-interest. Charles Dornsife: "the idea that in the absence of speed limits people will drive in a manner that endangers their own and other people's lives ... is pure nonsense." A road network without interference harnesses human nature, our greatest resource. But a system that interferes with our better judgement and "treats us like zombies" (Hans Monderman), turns us into zombies or silent screamers. I blame the control system itself. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_kpPlsKMZw9I', 'kpPlsKMZw9I', false); return false;">reply to this</a>)   <a name=27uPpAzZVNE onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=27uPpAzZVNE', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/quasimojo">quasimojo</a> (2 days ago) Why force the majority down? Because there are millions of selfish morons behind the wheels of machines that have the capacity to kill. I wish it didn't have to be this way, but that's the way it is. Taking away more controls may alleve frustration but it won't improve road safety imho. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_27uPpAzZVNE', '27uPpAzZVNE', false); return false;">reply to this</a>)   <a name=rA1JC7-Lr-Y onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=rA1JC7-Lr-Y', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) I like the video, I especially like the awareness of the fear of regulators and insurers that seem to control life in general in all kinds of ways, not just traffic. There's a nuance missing though I think. >>> (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_rA1JC7-Lr-Y', 'rA1JC7-Lr-Y', false); return false;">reply to this</a>)   <a name=xEjfNS7H0ts onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=xEjfNS7H0ts', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) Thanks for your comments. 1. "a nuance missing" - please elaborate (perhaps you have in the later comments). Here I will just say that earlier drafts were 20 minutes long, and I have a bunch of other material. It had to be cut down to make it on to YouTube. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_xEjfNS7H0ts', 'xEjfNS7H0ts', false); return false;">reply to this</a>)   <a name=T2Ft8AVfas0 onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=T2Ft8AVfas0', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) Having a roundabout, a four-way crossing or a yielding road is not less of regulation or control as a traffic light. In all cases there are clear rules, only the rules are made clear by signs and markings instead of lights. An egocentric driver would just as easily run a red light as he would not yielding to roundabouts. So it's not about regulation and it's not about control. It's about the efficiency of the control system. >> (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_T2Ft8AVfas0', 'T2Ft8AVfas0', false); return false;">reply to this</a>)   <a name=8ijKozfD0r8 onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=8ijKozfD0r8', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) As I say in the video, lights demand blind obedience. Roundabouts are better, but not ideal. With no outside controls, as I hope the imperfect footage shows, we automatically revert to the workable, ancient common law principle of first-come, first-served, or first-in, first-out, or filter-in-turn (as it's known in Jersey). That gives humans a sense of responsibility and control, people watch each other instead of the lights, and hey presto, it works. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_8ijKozfD0r8', '8ijKozfD0r8', false); return false;">reply to this</a>)   <a name=qjBvVDpTI5s onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=qjBvVDpTI5s', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) Traffic lights are very simple to interpret, while an oncoming motorcycle who has right of way can be very hard to spot depending on the circumstances. So lights can be safer, unless the system behind it is setup way to inefficient. Then the frustration about the lack of intelligence behind the system will cause more problems then they try to solve. Hence the human brain in London will probably be way smarter then the simplistic traffic light logic there. >> (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_qjBvVDpTI5s', 'qjBvVDpTI5s', false); return false;">reply to this</a>)   <a name=bpUthirJThk onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=bpUthirJThk', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) Here in Holland there are loops in the asphalt to detect traffic in order to prevent pointless reds (this is the actual subject, the stupidity of some lights, not the lights as a whole). If traffic light timers and detection loops are set up correctly, then there will be less frustration (since the system is smart, fair, efficient and quick). >> (time limit between posts) (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_bpUthirJThk', 'bpUthirJThk', false); return false;">reply to this</a>)   <a name=Uct1eCP11bk onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=Uct1eCP11bk', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) > Since they are easy to interpret and interactive for all road directions, they will prevent false interpretations of traffic made by either stress, ego, fatigue, reduced eye sight etc. The main road here has a system in daytime which creates a wave of green lights when riding in the main direction towards or from the center, when sticking to the speed limit.>> (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_Uct1eCP11bk', 'Uct1eCP11bk', false); return false;">reply to this</a>)   <a name=a3ZyNXXsqBo onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=a3ZyNXXsqBo', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) That's interesting, thanks, and I'll give it some thought. But what is negative about main road priority is (pace Kenneth Todd), it confers superiority on one set of road users at the expense of others. It's much more democratic to use the single queueing system, so the first to arrive at a junction is the first to leave. Without controls, that is more or less how it happens. It's natural and eminently fair. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_a3ZyNXXsqBo', 'a3ZyNXXsqBo', false); return false;">reply to this</a>)   <a name="cnLI7_T_2Lk" onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=cnLI7_T_2Lk', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) The control with the filter-in-turn is the rule that you have to let one vehicle pass before you have right of way. With a roundabout it is the rule that traffic on the roundabout has right of way. With lights it is the rule that you stop on red and go on green. In all cases it is the drivers that control their vehicle and give way (or not). They are all means of "traffic control", it's just that lights in London apparently have very inefficient logic / detection systems. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_cnLI7_T_2Lk', 'cnLI7_T_2Lk', false); return false;">reply to this</a>)   <a name=c9IQj8qwp9I onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=c9IQj8qwp9I', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) I take your point, and it's true that many London lights are abysmally phased, but why impose an expensive control system in the first place when you have a brilliant innate control system that has evolved over millennia: human nature and human skill. We can filter as pedestrians; we can filter when we're pedestrians on wheels. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_c9IQj8qwp9I', 'c9IQj8qwp9I', false); return false;">reply to this</a>)   <a name=LOFbGKAD4IM onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=LOFbGKAD4IM', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) At night all lights here are red unless you approach it at the speed limit, in which case (when there is no traffic on the other roads approaching) it will go green just before you would want to slow down for the red. In that case it is much faster and safer than a filter-in-turn system. If you design the logic of a light properly, it has the potential to be more efficient, quicker and safer. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_LOFbGKAD4IM', 'LOFbGKAD4IM', false); return false;">reply to this</a>)   <a name=I6762TVtOx4 onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=I6762TVtOx4', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) There was a typo in my last posting. This is the corrected entry: Certainly I'd like to see the system, but at the moment, through long observation and experience, I still think we're best off left to own devices. So we might have to agree to disagree! But show me your system. Certainly I'll include it in the eventual full-length film if and when I get the funding or commission. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_I6762TVtOx4', 'I6762TVtOx4', false); return false;">reply to this</a>)   <a name=JA9sAobWY8k onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=JA9sAobWY8k', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/romancassini">romancassini</a> (19 hours ago) Very well saying "if you design the light properly", but it is quite clear that they have not yet been designed in your efficient, Utopian manner. What is the point in spending countless thousands trying to invent 'traffic light A.I.', when it has been proved in deregulated cities that removing them altogether serves the same purpose. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_JA9sAobWY8k', 'JA9sAobWY8k', false); return false;">reply to this</a>)   ----- Comment deleted by user -----  <a name=yY8fAkU1pe4 onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=yY8fAkU1pe4', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) Thanks, that's very useful, and perhaps we can meet / explore your points more fully when the time comes (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_yY8fAkU1pe4', 'yY8fAkU1pe4', false); return false;">reply to this</a>)   <a name="k_rDVJdMSQI" onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=k_rDVJdMSQI', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) I don't think that your analogy between pedestrian traffic and high speed vehicle traffic is true. Pedestrian speed is normally slow and relatively identical. The difference in car speeds can be much higher. When two roads cross with a filter-in-turn system, all cars will have to slow down even when there is no traffic. For two high speed roads, traffic lights CAN be safer and more efficient / faster (if setup like here). (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_k_rDVJdMSQI', 'k_rDVJdMSQI', false); return false;">reply to this</a>)   <a name=iGcBoARcxBc onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=iGcBoARcxBc', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) What's wrong with traffic slowing down approaching a junction? I would respond at more length but I'm a bit busy right now. I'm sure we'll talk again! (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_iGcBoARcxBc', 'iGcBoARcxBc', false); return false;">reply to this</a>)   <a name=Fiy29P4pRVI onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=Fiy29P4pRVI', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) Here a crossing without lights, but also apparently without rules: http://www.youtube.com/watch?v=Fg9f93gpfbo (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_Fiy29P4pRVI', 'Fiy29P4pRVI', false); return false;">reply to this</a>)   <a name="q6lRFQt_fKg" onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=q6lRFQt_fKg', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) To pilootdotcom - I think I deleted your last comment by mistake, the one that begins "Don't get me wrong". Please re-post it if possible, thanks! (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_q6lRFQt_fKg', 'q6lRFQt_fKg', false); return false;">reply to this</a>)   <a name=168o6yRXbGw onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=168o6yRXbGw', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) For crossings on street level, filter-in-turn will probably work better than lights. But when a slow street crosses a fast corridor, you don't want fast cars slowing down because of the infrequent likelihood of crossing / turning traffic from that street. In fact, when there usually isn't any crossing traffic, there is a higher risk of people not slowing down anyway. A light which is always green on the corridor except when traffic is detected from the street will be safer and faster. Right? (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_168o6yRXbGw', '168o6yRXbGw', false); return false;">reply to this</a>)   <a name=m7B8px3vhHE onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=m7B8px3vhHE', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (2 days ago) Traffic slowing down approaching a junction will increase congestion (duh?). Isn't that where this whole discussion / documentary is all about? To find systems that will work with the best efficiency for a particular situation in order to prevent traffic jams, annoyances, polution and accidents? (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_m7B8px3vhHE', 'm7B8px3vhHE', false); return false;">reply to this</a>)   <a name=qH2tW92vswk onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=qH2tW92vswk', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/mjcassini">mjcassini</a> (2 days ago) I know what you mean, but not sure you "have to find a system". Wherever roads intersect, filter-in-turn works because it encourages traffic to proceed at speeds appropriate for the conditions. I don't mind some psychological traffic calming, such as bushes and fountains. If humans aren't distracted by lights and signs, and allowed to exercise their own intelligence, they proceed steadily and filter. So the traffic keeps flowing, instead of being held up at lights. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_qH2tW92vswk', 'qH2tW92vswk', false); return false;">reply to this</a>)   <a name=aSibgQrH-2A onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=aSibgQrH-2A', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (9 hours ago) I'm not saying traffic lights on all crossings are the way to go. A lot of times it can be indeed overdone. But there are plenty of situations, especially where speed differences between crossing roads are big, where traffic lights are (much) safer and can lead to a smoother / quicker traffic flow. (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_aSibgQrH-2A', 'aSibgQrH-2A', false); return false;">reply to this</a>)   <a name=0SMj8NvPbMk onclick="postUrlXMLResponse('/comment_servlet', '&mark_comment_as_spam=0SMj8NvPbMk', null); return false;"></a><a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU"></a>  <a href="http://www.youtube.com/user/pilootdotcom">pilootdotcom</a> (9 hours ago) The problem isn't so much the traffic lights themselves, but the policy makers there apparently not managing traffic situations properly and not using the traffic light technology available to them in a smart way. Saying simply that traffic lights don't work is too short sighted (just like saying that only traffic lights are a guarentee for proper traffic control). It's more complex than you portray, in my opinion :-) (<a href="http://www.youtube.com/comment_servlet?all_comments&v=1nHx3SRpRXU&fromurl=/watch%3Fv%3D1nHx3SRpRXU" onclick="showCommentReplyForm('comment_form_id_0SMj8NvPbMk', '0SMj8NvPbMk', false); return false;">reply to this</a>)     </div> </body> </html>