http://citycyclingedinburgh.info/bbpress/ CityCyclingEdinburgh Forum » Topic: "Why Cyclists Blow Through Stop Signs: It's Physics" en Sun, 31 May 2026 18:14:15 +0000 http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50185 Wed, 14 Dec 2011 04:29:06 +0000 ruggtomcat 50185@http://citycyclingedinburgh.info/bbpress/ <p>should be 'no trailers' in that case! </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50183 Wed, 14 Dec 2011 00:34:10 +0000 kaputnik 50183@http://citycyclingedinburgh.info/bbpress/ <p>Is it "no recumbents" really? I assumed it was more an ironic dig at the fact that cycling infrastructure so often seems designed to inhibit reclined mobility </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50182 Wed, 14 Dec 2011 00:32:27 +0000 Arellcat 50182@http://citycyclingedinburgh.info/bbpress/ <p><img src="http://farm4.staticflickr.com/3084/2663031951_20de424871_m.jpg"> </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50180 Tue, 13 Dec 2011 23:37:34 +0000 ruggtomcat 50180@http://citycyclingedinburgh.info/bbpress/ <p>not sure about the no recumbent signs... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50174 Tue, 13 Dec 2011 23:04:38 +0000 kaputnik 50174@http://citycyclingedinburgh.info/bbpress/ <p>just saw this very clever poster on tumblr - <a href="http://tactiletexture.tumblr.com/post/14030136342/what-road-signs-would-look-like-if-designed-by">What road signs would look like if cyclists designed them</a>. Amused me doubly. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50171 Tue, 13 Dec 2011 22:05:23 +0000 Roibeard 50171@http://citycyclingedinburgh.info/bbpress/ <p>@Ruggtomcat - or even more obviously, treating a UK Stop Sign/line as a Give Way.</p> <p>Something of which I'm guilty!</p> <p>Robert </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50170 Tue, 13 Dec 2011 21:55:02 +0000 ruggtomcat 50170@http://citycyclingedinburgh.info/bbpress/ <p>The situation here - four way stop signs - is pretty different from running red lights, which was never suggested to be all right by the artical. I would compare it more to allowing cyclists up one way streets (which thy mostly are in europe with no ill effects.) </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50168 Tue, 13 Dec 2011 20:03:50 +0000 Uberuce 50168@http://citycyclingedinburgh.info/bbpress/ <p>*bows* Thankee </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50130 Tue, 13 Dec 2011 14:52:14 +0000 Jackson Priest 50130@http://citycyclingedinburgh.info/bbpress/ <p><em>...either I effortlessly slip it on without a blip to cadence, like a glass-biked Cinderella, or I fumble up the road shaking and stamping my foot on the pedal like a man who's just poured beef stroganoff into his boot and gone for a walk through a sewer of starving rats.</em></p> <p>Beautiful prose, Uberuce! *Applause* </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50129 Tue, 13 Dec 2011 14:47:57 +0000 Smudge 50129@http://citycyclingedinburgh.info/bbpress/ <p>I have to say the advantage of the spd is that if you just plank your foot on the pedal and power away it clips in half the time almost by accident. The really dangerous bit imo is the changeover between clips and cleats, that moment where you come to a halt and casually kick your heel sideways/slide your foot gracefully back out of the clip*</p> <p>*whichever is wrong for the retention method you just adopted, followed by a frantic second attempt to free your foot just as you realise there isn't actually time to get your foot out &amp; down now and topple gracelessly to the ground... </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50126 Tue, 13 Dec 2011 14:40:05 +0000 Uberuce 50126@http://citycyclingedinburgh.info/bbpress/ <p>The phenomenon I've noticed with the straps is that there's no middle ground for me when it comes to putting the foot in stylishly; either I effortlessly slip it on without a blip to cadence, like a glass-biked Cinderella, or I fumble up the road shaking and stamping my foot on the pedal like a man who's just poured beef stroganoff into his boot and gone for a walk through a sewer of starving rats. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50121 Tue, 13 Dec 2011 14:21:19 +0000 alibali 50121@http://citycyclingedinburgh.info/bbpress/ <p>What we need is some tech from F1 in the form of regenerative braking.</p> <p>I fancy pumping air into a bottle while slowing and using it to provide a kick to help get back up to speed.</p> <p>Electric storage would be an option too, of course. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50116 Tue, 13 Dec 2011 13:45:02 +0000 Smudge 50116@http://citycyclingedinburgh.info/bbpress/ <p>Can't speak for the duck-walk roady shoes but my (mtb type) spd's clip and unclip with <em>minimal</em> effort. I would say more easily than toeclips &amp; straps, though there's not a lot in it. They could probably do with being tightened up a little and/or having the shoe part of the cleat replaced, but I tend not to use too much awsomepower(tm) on my normal commute so no problems so far :)</p> <p>I have to confess I too am a Red Light Stopper (RLS?) and tut loudly when some oaf "blows" the red light. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50106 Tue, 13 Dec 2011 11:36:35 +0000 Uberuce 50106@http://citycyclingedinburgh.info/bbpress/ <p>Here was me thinking it was unclipping. If only I could trackstand for more than five seconds...</p> <p>I wonder if, should a cycling revolution have happened, the windscreen washers you used to get would have retasked to offering to help clipped and cleated riders stay upright for 20p a shot?</p> <p>I imagine cleats are far eaiser than my straps, although I found to my delight at the weekend that my superbly grippy, warm and waterproof rigger's boots are pointy enough in their steel toe to fit in my straps easier than all but one of my normal shoes. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50099 Tue, 13 Dec 2011 10:53:21 +0000 Instography 50099@http://citycyclingedinburgh.info/bbpress/ <p>And obeying an imaginary 'Idaho law' and slowing, carefully considering traffic and ceding right of way is not the same as 'blowing through stop signs'. So even if physics is the problem, an Idaho law would, at best, be a partial and unsatisfactory solution (if the aim is to conserve momentum).</p> <p>Not doing a particularly good job of squaring that circle. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50093 Tue, 13 Dec 2011 10:35:32 +0000 wingpig 50093@http://citycyclingedinburgh.info/bbpress/ <p><blockquote><em>"Even if a commuter cyclist could produce more than a 100 watts, [they are] unlikely to do so because this would force [them] to sweat heavily..."</em></blockquote></p> <p>...yet...</p> <p><blockquote><em>"Accelerating from stops is strenuous, particularly since most cyclists feel a compulsion to regain their former speed quickly."</em></blockquote></p> <p><em>Most</em> feel compelled to quickly regain their speed but are unlikely to do so as it'll make them sweat, even if they can output more than 100W?</p> <p>Accelerating from stops is one of my favourite things about cycling in cities. Pointedly obeying road signs is another. </p> http://citycyclingedinburgh.info/bbpress/topic.php?id=4708#post-50092 Tue, 13 Dec 2011 10:23:05 +0000 chdot 50092@http://citycyclingedinburgh.info/bbpress/ <p><img src="http://farm8.staticflickr.com/7008/6504239045_94751c50c3.jpg"></p> <p>Not sure that the use of the word physics is appropriate, but it explains/justifies why cyclists don't like stopping. </p> <p>Not the same as justifying RLjing...</p> <p><a href="http://www.treehugger.com/bikes/why-cyclists-blow-through-stop-signs-its-physics.html" rel="nofollow">http://www.treehugger.com/bikes/why-cyclists-blow-through-stop-signs-its-physics.html</a> </p>