TE
科技回声
首页24小时热榜最新最佳问答展示工作
GitHubTwitter
首页

科技回声

基于 Next.js 构建的科技新闻平台,提供全球科技新闻和讨论内容。

GitHubTwitter

首页

首页最新最佳问答展示工作

资源链接

HackerNews API原版 HackerNewsNext.js

© 2025 科技回声. 版权所有。

How well do London buses match the timetables?

81 点作者 michjedi大约 6 年前

11 条评论

jnty大约 6 年前
On trains and planes, my main critieria is that I arrive by the stated arrival time and therefore am pretty unfussed by stories about padding time etc - that&#x27;s more of a long term structural concern than something that will bother me on the day. I think operators have figured this is all most people really care about over time (perhaps excepting highly competitive routes.)<p>You lose this ability to check timings with a non-fixed timings, and have to rely on &#x27;oh, it&#x27;s probably about half an hour from here to here&#x27; or google&#x27;s guess at the real timetabled journey you&#x27;ll do (which the operator hasn&#x27;t really promised you at any stage.) People don&#x27;t seem to mind this too much.<p>I wonder if part of this is that waiting for a bus is usually less pleasant than being on one in countries where there is often cold&#x2F;windy&#x2F;rainy weather. That&#x27;s something you don&#x27;t really get with long-distance trains or planes. I&#x27;m going to be grumpy if I have to wait in the pouring rain for 15 minutes, even if I still make it to my appointment on time.
评论 #19851502 未加载
评论 #19850867 未加载
评论 #19851071 未加载
评论 #19851528 未加载
vidarh大约 6 年前
TFL cares a great deal about these kind of contracts with users.<p>Years ago I was involved with a project to build dynamic displays to show bus times (mostly for third parties like e.g hospitals that wanted to display bus times as a service, but they&#x27;re in use on some bus stations like Vauxhall and East Croydon as well).<p>TFL did tons of testing to ensure we complied with requirements to ensure the display would remove time estimates if it could not reach the API often enough, etc. to ensure we never misled passengers.<p>They were very adamant that the displays always had to under-promise based on what information was available.
velox_io大约 6 年前
I&#x27;ve been in London for five years and don&#x27;t think I&#x27;ve ever used the printed timetables, the live ones at some bus stops work surprisingly well (and saves me having to whip out my phone to check City Mapper, which started in London).<p>Something that the article missed is that late buses are compounded. As the delay causes more people to wait, those people getting on delay the bus even further, that&#x27;s where the adage &quot;wait ages for a bus, then two come at once&quot; stems from. Even if the bus behind it is also delayed, it makes up time as the previous bus has scoped up all passengers. Occationally buses will divert&#x2F; terminate to rebalance the timetable.<p>I was recently in hospital, where the wifi wasn&#x27;t great so I spent a lot of time looking out the window, and onto a busy junction. During the later part of rush hour buses often arrived together, even saw three of the same bus arrived together (only a couple vehicles separating the last bus) at one point! (like I said, bad wifi) It was staggering seeing so many ambulances arrive during the weekend, they often arrive together as the first ambulance clears a path (like in Die Hard 3).<p>You also see that on the tube, when people are fighting to get on a train (delaying it further) then the one following a couple of minutes behind is largely empty, it&#x27;s even a little more pronounced as trains can&#x27;t leapfrog each other to spread the load.
SamBam大约 6 年前
The conclusion of the article seems to be related to the general rule that if, say, a box of nails advertises 1000 nails, the manufacturer will have set the actual average to be higher than 1000 nails so that some large majority of buyers will always have at least 1000 nails in the box. (I seem to recall an A-Level stats question on my exam asking what the average should be, to ensure that 95% of buyers received at least 1000 nails.)<p>Again the statement on the box is not a statement of reality, but a contract that the buyer should be (almost) guaranteed of getting at least 1000 nails.<p>If I recall correctly, calorie values on nutrition boxes are the same, at least in the US: a 100 calorie snack bag will have <i>at least</i> 100 calories, because the FDA mandates that the seller should be at minimum providing what it claims.
评论 #19850687 未加载
评论 #19850812 未加载
评论 #19852359 未加载
YayamiOmate大约 6 年前
I&#x27;ve noticed this when riding on a long tram lane which is supposed to be a fast track and a transfer one. So I prefer more often trams, because it means less people.<p>I&#x27;ve also noticed that I dont have to remember timetable because it&#x27;s basically organized in so-much-trams-per-hour, so it&#x27;s 20mins or 15, 12 etc. So I just need to remeber a minute-offset and an interval.<p>As a side effect, i&#x27;ve noticed that at rush hour when interval is 5 mins the timetable stops to have meaning because tram can be within -1 to +3 of timetable arrival, that means it can be virtullay any time. Also, I should wait max abt 5 minutes.<p>I think that intervals vs arrival time change meaningfullness as a relation of interval vs timetable confidence, and passenger travel time confidence for that matter. If you can&#x27;t plan your arrival at the stop better than +-1min you don&#x27;t need exact times for 5-6 minute intervals. For 60min it probably makes sense. I guess one could derive good metrics for this.
评论 #19851852 未加载
cosmodisk大约 6 年前
It&#x27;d be interesting to see how train companies perform. They publish stats based on destinations. I take train to work and so it happens that it also goes to the airport. If the train is delayed more 10 min, they&#x27;d cancel smaller stations and go right to the airport. I wonder how this gets reflected on their stats of which I&#x27;m very skeptical to start with.
tialaramex大约 6 年前
The buses and underground in central London do have real timetables by the way, but they&#x27;re primarily for the operators.<p>If you drive buses or trains you want to know when your service is supposed to start and how long it&#x27;s supposed to take to get where it&#x27;s going. But for passengers this is a metro service (except for the first and last services on routes which shut overnight) so they don&#x27;t care if this is an 1105 running two minutes early or an 1100 running three minutes late.
评论 #19852010 未加载
vidanay大约 6 年前
I have noticed this paradox when accessing my VPN time based code. More often the time until refresh is &gt;30 seconds than it is &lt;30 seconds (60 seconds between refreshes)
评论 #19851236 未加载
评论 #19851244 未加载
SiempreViernes大约 6 年前
Wow, that certainly took a sharp turn into melodrama at the end.<p>What happened to truth is that there wasn&#x27;t much clarity to begin with and then the schedulers found out that they could meet expectations by using that ambiguity. Mystery: solved!<p>Now lets see if they complain about current and electrons going in opposite directions...
juskrey大约 6 年前
Obviously the bus can&#x27;t arrive before departure
imatworknow大约 6 年前
I wonder whether this is the norm for other cities?
评论 #19851151 未加载
评论 #19850036 未加载
评论 #19853844 未加载
评论 #19850896 未加载