tag:blogger.com,1999:blog-1141932539860553199.post5706108276818744879..comments2024-03-05T10:52:24.691+00:00Comments on Mark Wadsworth: "Holborn Tube station to trial 'standing only' escalators for six months"Mark Wadsworthhttp://www.blogger.com/profile/07733511175178098449noreply@blogger.comBlogger20125tag:blogger.com,1999:blog-1141932539860553199.post-34872109005835938372016-05-09T09:43:26.494+01:002016-05-09T09:43:26.494+01:00I call it the "denominator effect" , cha...<br />I call it the "denominator effect" , changing the size of the denominator of a fraction does not change the size of the fraction by the same amount.Dinerohttps://www.blogger.com/profile/14632385731642361211noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-75117172806390394952016-05-09T09:21:51.469+01:002016-05-09T09:21:51.469+01:00Another way of looking at this is that it is actua...Another way of looking at this is that it is actually an optimal solution as there are options for more people. The people who stand are not in enough of a hurry to walk or would prefer to read a book, etc. A small proportion are unable to of course. The people who want to get where they are going to quickly or (like me) need to get some exercise, do so. I've been behind slow walkers many a time and bear them no grudge. Except if they don't walk on the right when it is well clear :-)mombershttps://www.blogger.com/profile/09650866436764567516noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-7906594012789477352016-05-09T08:41:58.309+01:002016-05-09T08:41:58.309+01:00For lowest elapse time a steady speed is best as t...For lowest elapse time a steady speed is best as traveling faster over part of the distance does not compensate for traveling proportionally slower over the rest.<br /><br />Similarly, Allocating the same number of people to each stage in a multiple stage project is best , as having more people on one stage does not compensate for having less people on another.<br /><br />And adding a person to a later stage of a project in response to a person being absent from a previous stage does not result in completing the project in the original elapsed time for project.Dinerohttps://www.blogger.com/profile/14632385731642361211noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-38064774276382450552016-05-08T22:22:39.046+01:002016-05-08T22:22:39.046+01:00@MW
Quite right. In fact it's the other way ...@MW <br /><br />Quite right. In fact it's the other way around.<br /><br />1. Original way of delineating which side to walk is the Statist solution. The worst. <br /><br />2. The new way is a Free-for-All, a Faux-Lib solution. Better.<br /><br />3. Charging people to pay rent for a scarce resource, ie a 50p standing surcharge, the Geoist solution is best. <br /><br />In theory at least. But hey who knows? One day when we all have NFC chips implanted option 3 might be practical.benjhttps://www.blogger.com/profile/11544297406005346095noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-22887376722895582232016-05-08T16:21:49.506+01:002016-05-08T16:21:49.506+01:00Shiney,
Goldratt's theory is obvious to anyon...Shiney,<br /><br />Goldratt's theory is obvious to anyone who has tried to drive out of London on a Friday evening. It always surprised me that highway engineers didn't seem aware of it. (Although I was told that highway engineers don't like running lots of little projects to optimise a road's capacity, they prefer building new ones.)Bayardhttps://www.blogger.com/profile/15211150959757982948noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-8146404556245042882016-05-08T16:06:27.470+01:002016-05-08T16:06:27.470+01:00@MW
Oh yes... agreed. Goldratt would say.... '...@MW<br /><br />Oh yes... agreed. Goldratt would say.... 'elevate' (really!) the bottleneck. Which just shifts it to somewhere else. <br /><br />So then fix that one, and so on. <br /><br />Ultimately the only 'constraint' is the 'market' for the throughput you can produce.<br /><br />If you haven't read The Goal, and related works, I strongly suggest them.Shineyhttps://www.blogger.com/profile/13281261419328886986noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-68012334005352372772016-05-08T12:57:09.388+01:002016-05-08T12:57:09.388+01:00PC, Sh, yes, it might just shift the bottleneck el...PC, Sh, yes, it might just shift the bottleneck elsewhere, that's no reason for not trying it. It is an 'experiment'.<br /><br />BJ, they are not <i>banning</i> anything - they are <i>allowing</i> people to stand on both sides, you can still try walking up if you wish.Mark Wadsworthhttps://www.blogger.com/profile/07733511175178098449noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-41484436362339185362016-05-07T20:23:35.242+01:002016-05-07T20:23:35.242+01:00So, a case where supply cannot meet demand?
Banni...So, a case where supply cannot meet demand?<br /><br />Banning walking is the Statist solution, and sub-optimal.<br /><br /><br />Perhaps a small additional charge on those wishing to stand would sort it out? 50p extra should get more people choosing to walk? <br /><br />Internalise those costs I say.benjhttps://www.blogger.com/profile/11544297406005346095noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-80225518175035867542016-05-07T18:55:58.561+01:002016-05-07T18:55:58.561+01:00Theory of Constraints - Goldratt addresses all thi...Theory of Constraints - Goldratt addresses all this - so you just need to read "The Goal" and all his stuff. In a production environment you need to balance flow through the system to achieve maximum throughput (sales) while minimising investment and inventory (WIP).<br /><br />In short - a system can only produce at the speed of the slowest operation. So speeding up one part just causes the work in progress inventory (in this case passengers) to pile up in front of the the next bottleneck. <br /><br />@Paul156 - people walking faster up the escalators will just pile up at the exit gate if they can't be processed - so balance the flow through the system and increase it through the bottleneck.<br /><br />See.... easy! (Only joking).Shineyhttps://www.blogger.com/profile/13281261419328886986noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-2585453212975540762016-05-07T09:38:53.441+01:002016-05-07T09:38:53.441+01:00Would have thought that standing only on long esca...Would have thought that standing only on long escalators would just transfer the bottleneck to the barriers at the top. <br />paulc156https://www.blogger.com/profile/12412449043451685404noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-53469564502489345402016-05-06T21:34:57.236+01:002016-05-06T21:34:57.236+01:00Tripped because I was tired, also disability relat...Tripped because I was tired, also disability related hence why I wall up the standing side. Probably completely unsafe but I get so impatient when I am late.<br /><br />I think I gain a minute by walking up and can just avoid a late clock in but could be my imagination. paulhttps://www.blogger.com/profile/02235916672731045819noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-12133063638211876872016-05-06T21:25:18.220+01:002016-05-06T21:25:18.220+01:00RM, that sounds like health fascism to me. What yo...RM, that sounds like health fascism to me. What you mean is "turn off the escalators completely and make everybody walk", if you are going to do that then why not "shut down public transport and ban cars and bicycles"?<br /><br />L, exacfly. Apart from the fact that driving at a constant speed is more pleasant and uses less fuel,, wear and tear than speeding up and braking all the time.Mark Wadsworthhttps://www.blogger.com/profile/07733511175178098449noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-44802827672027539392016-05-06T20:00:05.861+01:002016-05-06T20:00:05.861+01:00It's the same principle as variable speed limi...It's the same principle as variable speed limits and discouraging of lane changing on the M25. More traffic flows through a given section of road at times of peak flow. The trick is getting the actuall regulated speed 'right'.Lolahttps://www.blogger.com/profile/04586735342675041312noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-8870416147981155532016-05-06T18:57:30.170+01:002016-05-06T18:57:30.170+01:00No, no, no: COMPULSORY walking would keep people f...No, no, no: COMPULSORY walking would keep people fit and more than pay for itself via reduced costs for the NHS.Ralph Musgravehttps://www.blogger.com/profile/09443857766263185665noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-40869811658932875362016-05-06T18:27:26.146+01:002016-05-06T18:27:26.146+01:00G, interesting. I love walking along moving walkwa...G, interesting. I love walking along moving walkways.<br /><br />Din, true. On an escalator, you only save a few seconds, it's the principle really not the actual time saved.<br /><br />Paul, cause of trip?<br /><br />SL, true, but there are fat, lazy and disabled young people too. <br /><br />C, true and true, I ignored that second bit.Mark Wadsworthhttps://www.blogger.com/profile/07733511175178098449noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-74548421545818022162016-05-06T18:01:14.718+01:002016-05-06T18:01:14.718+01:00This slows down the people who usually walk up qui...This slows down the people who usually walk up quickly, but on average everyone gets up faster.<br /><br />But they are only going to make half of the escalators standing only and some will still be free for walking.Curtishttps://www.blogger.com/profile/10289346865017922952noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-18797336582562260302016-05-06T17:43:53.878+01:002016-05-06T17:43:53.878+01:00Getting rid of the 'fast lane' is just pan...Getting rid of the 'fast lane' is just pandering to the elderly and the lazy. It's real lowest common denominator stuff and not something the 'young' people's party should in any way support!Steven_Lhttps://www.blogger.com/profile/05029437876479574883noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-52391906456630482852016-05-06T17:27:45.150+01:002016-05-06T17:27:45.150+01:00Considering I tripped and fell on the way up the e...Considering I tripped and fell on the way up the escalator this morning, I think I'll try standing a bit. I usually travel in the last coach of the train so I can be first on the escalator and leisurely walk up the standing side while holding onto the right hand side, today I tripped in front of everyone. paulhttps://www.blogger.com/profile/02235916672731045819noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-4924211691531119102016-05-06T15:48:36.875+01:002016-05-06T15:48:36.875+01:00I suspect most people overestimate the time they a...I suspect most people overestimate the time they are saving as a proportion of the journey time by walking up. For example if you travel 20% faster you do not get to the destination in 20% less time.<br /><br /> It may seem counter intuitive, but consider, if you travel 100% faster you certainly dont get to the destination in 100% less time , the 100% increase in speed only reduces the journey time by 50%, and so on.Dinerohttps://www.blogger.com/profile/14632385731642361211noreply@blogger.comtag:blogger.com,1999:blog-1141932539860553199.post-44164332085738774062016-05-06T15:34:06.529+01:002016-05-06T15:34:06.529+01:00It's also a societal thing. I have never once...It's also a societal thing. I have never once seen a Dutch person walk up or down an escalator, and they invariably stand still on horizontal travelators as well. It's as if, this is a free gift and I want as much of it as possible.Graemehttps://www.blogger.com/profile/11007306140530173428noreply@blogger.com