antigee en-US Tue, 29 May 2012 09:55:47 +0000 http://bbpress.org/?v=1.0.2 q http://singletrackworld.com/forum/search.php http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173630 Wed, 16 Nov 2011 16:56:11 +0000 D0NK 3173630@http://singletrackworld.com/forum/ <p><blockquote>She was flashed by a car coming from her right and just pulled straight out in front of my mate</blockquote>Happens a lot I'm sure some drivers who I'm keeping pace with, flash cars that are waiting in side streets just to try and get me T-boned.<br /> <blockquote>Hmm.. so what you and Imabigkidnow seem to be saying is that I should roll up to the junction looking right, not because I intend to do anything with that information straight away, but because it is a reassuring body language signal to the drivers on the main road that I have seen them?</blockquote>dead right, sacres the bejeesus out of me when someones flying up a side road towards the road I'm on, only looking left.<br /> "look this way...look this way,lookthiswaylookthiswayLOOKTHISWAY!ohshiiiii...oh they stopped, phew" </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173602 Wed, 16 Nov 2011 16:49:34 +0000 richmtb 3173602@http://singletrackworld.com/forum/ <p>Pretty sure there was nothing that cyclist could have done differently other than be riding at half the speed (which isn't really the answer either)</p> <p>Brake or swerve though thats an interesting one. I've spent years mountain biking training my instinct away from braking when the shit hits the fan. As a result my first instinct on a bike is always to try and steer out of trouble. I wonder if it the wrong instinct for the road though </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173297 Wed, 16 Nov 2011 15:32:29 +0000 IanMunro 3173297@http://singletrackworld.com/forum/ <p>Yeah it does seem like a lot. My guess is that our internal perception of how time passes in these situations is quite often different to reality. I guess that internally we estimate a response time based on when we perceive an incident has started, but exclude the time it takes to recognise the incident.</p> <p>There's some details here -<br /> <a href="http://www.visualexpert.com/Resources/reactiontime.html">http://www.visualexpert.com/Resources/reactiontime.html</a></p> <p>One interesting point is that your reaction time also increases if you have a variety of options to choose from. I.e steer or brake. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173290 Wed, 16 Nov 2011 15:30:43 +0000 Cougar 3173290@http://singletrackworld.com/forum/ <p><blockquote>1.5 seconds is a scarily long time. jeepers </blockquote></p> <p>This is why there's pile-ups on motorways. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173257 Wed, 16 Nov 2011 15:23:48 +0000 TandemJeremy 3173257@http://singletrackworld.com/forum/ <p>interesting ian.</p> <p>If you are watching for them to move with your hands already on the brake I would have thought the 0.25 second nearer. as all you have to do is see the movement and grab the brake 1.5 seconds is a scarily long time. jeepers </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173256 Wed, 16 Nov 2011 15:23:18 +0000 Cougar 3173256@http://singletrackworld.com/forum/ <p>Pretty easy to be an expert when the hazard is presented to you on video and in a series of freeze-frame images. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173235 Wed, 16 Nov 2011 15:17:48 +0000 turboferret 3173235@http://singletrackworld.com/forum/ <p>Cycling in India, the chances of anyone at the side of the road pulling out on you, or cutting across you is about 75% <img src="http://singletrackworld.com/forum/my-plugins/bbcode-buttons/default/icon_rolleyes.gif" title=":roll:" class="bb_smilies" alt=""/> </p> <p>I ride automatically expecting everyone to be trying to kill me, and for it to be perfectly accepted. If that scenario had cropped up I probably would have combined a bit of a swerve to the left and honking to cut between the van and the golf. However that would have meant the Focus would have T-boned me good and proper <img src="http://singletrackworld.com/forum/my-plugins/bbcode-buttons/default/icon_eek.gif" title="8O" class="bb_smilies" alt=""/> </p> <p>I think that the chances of the cyclist avoiding both vehicles even with reactions of a ninja are pretty slim, just glad he seemed to get away pretty much unscathed.</p> <p>Cheers, Rich </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173165 Wed, 16 Nov 2011 15:01:52 +0000 IanMunro 3173165@http://singletrackworld.com/forum/ <p><blockquote>graham - thats including the time to get your foot from throttle to break - if you have your hands on the brakes already you should be able to get the brakes on in under 1/4 second</blockquote></p> <p>Reaction time for an expected simple stimulus is around 0.25s.<br /> You can have a go here - <a href="http://www.mathsisfun.com/games/reaction-time.html">http://www.mathsisfun.com/games/reaction-time.html</a></p> <p>HOWEVER this is for a very simple stimulus that you mind is totally focused on.<br /> So if the problem is were to be made even slightly more complicated - say you had to click when the word red is displayed, the reactions times will increase markedly due to the extra cognitive processing. Add in the amount of visual processing required to detect real-world situations and the figures rise significantly.<br /> For reference accident reconstructions use a figure of 1.5 seconds for reaction response time. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/5#post-3173027 Wed, 16 Nov 2011 14:37:12 +0000 billysugger 3173027@http://singletrackworld.com/forum/ <p><blockquote>But yeah, I see your general point</blockquote></p> <p>You're not that STW. I take it back. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172994 Wed, 16 Nov 2011 14:30:04 +0000 Junkyard 3172994@http://singletrackworld.com/forum/ <p>If i prepared to avoid every car that did not obey the highway code it would be a very long journey to word done at about walking speed.<br /> You cant react to that we all see cars do that [ prepare to turn right] - granted I try to make eye contact to make sure they have seen me but at that junction you also cant see behind the van to see whether the car there will pull out so I may not have done. Would have covered the brakes but am i meant to crawl through/past every junction just in case?<br /> Braking late would not have helped the cyclist either IMHO </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172985 Wed, 16 Nov 2011 14:28:30 +0000 GrahamS 3172985@http://singletrackworld.com/forum/ <p><blockquote>graham - thats including the time to get your foot from throttle to break</blockquote></p> <p>Ah I see. </p> <p>Still as you say the cyclist had two obvious potential hazards to consider, once he could see past the van that turned in front of him. Not unreasonable that he may have concentrated more on the silver car pulling out from the left as they had less visibility of him compared to the black car staring directly at his flashing front lights. </p> <p>I think he did pretty well to manage any kind of brake or swerve in that situation. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172984 Wed, 16 Nov 2011 14:28:22 +0000 mintimperial 3172984@http://singletrackworld.com/forum/ <p><blockquote>I am looking for the lessons to learn</blockquote></p> <p>Call me contrary if you like, but I can't help thinking that, just possibly, the people who really need to learn lessons from that video are, perhaps, the ones in the cars... </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172967 Wed, 16 Nov 2011 14:25:53 +0000 thisisnotaspoon 3172967@http://singletrackworld.com/forum/ <p>I agree with TJ (ish) </p> <p>In an ideal world you'd stop and not hit/be hit by the golf, but in the real world if there had been time to react to the golf turning 9there's not really, theres only a second between it crosing it's give way line and the cyclist hitting the floor) you'd probably compleltey infront of it, which in hindsight might not have been a bad thing as youd not end up under the focus!</p> <p>So yes, TJ is completely right, but in reality, short of cycling at a fraction of the speed (which he shouldn't have to do when it's not his fault) there's nothing the cyclist could do, the whole thing happened within his reaction time. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172961 Wed, 16 Nov 2011 14:24:47 +0000 DezB 3172961@http://singletrackworld.com/forum/ <p>Ride in the gutter? He might've got through then <img src="http://singletrackworld.com/forum/my-plugins/bbcode-buttons/default/icon_wink.gif" title=";-)" class="bb_smilies" alt=""/> </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172957 Wed, 16 Nov 2011 14:22:27 +0000 TandemJeremy 3172957@http://singletrackworld.com/forum/ <p>graham - thats including the time to get your foot from throttle to break - if you have your hands on the brakes already you should be able to get the brakes on in under 1/4 second </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172953 Wed, 16 Nov 2011 14:21:49 +0000 CharlieMungus 3172953@http://singletrackworld.com/forum/ <p><blockquote>Guys - I am neither blaming the cyclist nor saying it could have been avoided - I am looking for the lessons to learn</blockquote></p> <p>Only lesson here, is 'pass on the left'. 99% of people expect that. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172945 Wed, 16 Nov 2011 14:20:02 +0000 TandemJeremy 3172945@http://singletrackworld.com/forum/ <p>Guys - I am neither blaming the cyclist nor saying it could have been avoided - I am looking for the lessons to learn </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172940 Wed, 16 Nov 2011 14:19:04 +0000 jam bo 3172940@http://singletrackworld.com/forum/ <p>meh, loads of time. should of bunny-hopped it. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172939 Wed, 16 Nov 2011 14:18:59 +0000 GrahamS 3172939@http://singletrackworld.com/forum/ <p><blockquote>reaction time is around 1/4 second</blockquote></p> <p>Is it? That seems kinda short.</p> <p>The official stopping distance is 40ft at 20mph with half of that being "thinking time".</p> <p>I make that about 0.68 seconds. </p> http://singletrackworld.com/forum/topic/youtube-cyclist-knocked-off-bike/page/4#post-3172933 Wed, 16 Nov 2011 14:17:35 +0000 mintimperial 3172933@http://singletrackworld.com/forum/ <p>I would definitely have been mince in that situation. No way I could have avoided it. Videos like this put me right off the idea of commuting to work on my bike. </p>