recentpopularlog in

aries1988 : driving   79

Using CFD to Help Increase the Safety of Driverless Cars
Pointwise uses a multiple block approach simplifying complex CFD studies into modular grids that can easily be linked together. This approach gives users full control of the process, from the smallest element to the largest, and enables them to troubleshoot and improve grid quality early in the process. It also saves time and increases accuracy by allowing the reuse of grids in different configurations for additional CFD studies.

“For the motorway study, I did not have to re-mesh the car. I did not have to re-extrude viscous layers or re-mesh the volume,“ says Khalil. “It saves a remarkable amount of time and ensures that the results are exactly the same because we’re using the exact same data and mesh. Pointwise’s T-Rex feature was also critical to accurately capturing the boundary layer flow, which is especially important for turbulence studies.”
cfd  example  driving  automation  car  autoroute 
4 weeks ago by aries1988
Case Study: CFD and AI Can Aid Driverless Cars | Another Fine Mesh
Working with his professors and advisors, Khalil began by gathering data about road conditions on the UK’s M1 roadway such as traffic patterns, accidents, winds, and speed. He then used Pointwise to create individual high-fidelity meshes for the subject car and a variety of vehicles. After inputting the road conditions and running simulations on the individual aerodynamics of the main vehicle, he joined all the meshes together using Pointwise’s multiple block feature for the final study of how the moving parts interacted together.
cfd  example  driving  automation 
4 weeks ago by aries1988
Twitter
换成南京也是非常贴切。“慢车后面并线出来的,经常还是慢车”说得太准了,99%的人都不知道变道要加速。每次我从空车道快速驶过,时不时就会冒出个慢车变道在我前面,根本也不加速,就慢悠悠的堵在我前面。路怒症不能怪我,都是被这些傻逼逼出来…
china  driving  daily 
4 weeks ago by aries1988
Self-driving cars face a new test: snow
Autonomous vehicles must overcome technical difficulties to manage winter weather
snow  winter  ai  car  driving 
december 2017 by aries1988
What Happens When We Give up Control of Our Cars? | Feature | Car and Driver
Drivers’ licenses origi­nated as a means of reining in the early chauffeurs. Garages installed security systems. Meanwhile, cars themselves grew steadily more reliable, making the chauffeur less and less necessary. And as the automobile matured, owners ultimately realized that what they wanted from the new technology was not convenience at all. They wanted control. They discovered that the act of driving was the kind of pleasure best kept for themselves.

Words like “autonomous” and “self-driving” mislead because they promise a kind of self-sufficiency on the part of the machine. The autonomous entity is the thing that is supposed to take care of itself. But the coming class of cars does not take care of itself at all. These cars are dependent and, as such, require a larger conversation about what the rules and expectations of that dependency should look like. Once a car belongs to a network, you have to worry about whether the network is safe. Once an algorithm is in command, you have to worry about how the algorithm thinks. We are surrendering control as surely as the first car owners of a century ago did, and when you surrender control, you could end up with a chauffeur problem.

It was Apple, Google, and Intel, companies for which the automobile is not primarily an aesthetic object and driving is not an instrument of pleasure.
driving  car  future  opinion  gadget  automation  debate  history 
october 2017 by aries1988
Corriger une position trop à droite sur la chaussée
Identifiez également toujours un point central c'est-à-dire au milieu de votre voie de circulation. Sur les voies de circulation larges, comme les voies rapides par exemple, l'identification d'un point central conjuguée avec un regard porté au loin est très utile. Le repère sur le pare-brise doit être ponctuellement contrôlé, afin de vérifier que votre position est la bonne (à la manière des contrôles de sécurité).
tips  driving 
august 2017 by aries1988
Pourquoi y a-t-il autant de ronds-points en France ?
Le Monde.fr version mobile - Pour le savoir, il a fallu interroger celui qui a été le discret pionnier de leur développement au début des années 1980 : l’ancien premier ministre Jean-Marc Ayrault.
video  explained  france  français  driving  city  nantes  moi 
july 2017 by aries1988
壁下观 #39: 「观二代」是怎么养成的

育儿兹事体大,如今各类育儿经验和教学文章越来越多,而中国教育体系里一向疲弱的美育,也越来越受到新一代父母的重视。以「壁下观」为宗旨的主播们,是如何培养自己的「观二代」的?超人夫妇的女儿在四个月大时就已经踏足壁下,四处观赏壁画、雕像、古建筑。本期我们就来听听她们的育儿观。
children  travel  driving  family  fun  art  history  china  kid 
february 2017 by aries1988
Computer says “non”

As Adam Gopnik once wrote about living in France: Parisians emerge from the government buildings on the Ile de la Cité feeling just the way New Yorkers do after a good workout: aching and exhausted but on top of the world.
français  administration  bureaucracy  anecdote  british  fun  driving  comparison  bac 
january 2017 by aries1988
Why Drivers in China Intentionally Kill the Pedestrians They Hit

In China the compensation for killing a victim in a traffic accident is relatively small—amounts typically range from $30,000 to $50,000—and once payment is made, the matter is over. By contrast, paying for lifetime care for a disabled survivor can run into the millions

These drivers are willing to kill not only because it is cheaper, but also because they expect to escape murder charges. In the days before video cameras became widespread, it was rare to have evidence that a driver hit the victim twice. Even in today’s age of cellphone cameras, drivers seem confident that they can either bribe local officials or hire a lawyer to evade murder charges.
reportage  china  today  driving  killing  life  society  money  security  crime  law 
august 2016 by aries1988
10 Months, 45 National Parks, 11 Rules - NYTimes.com
I knew I would learn from every moment and every mile, but only if I paid attention to what was happening around me. So I adopted a series of daily practices — I called them my roadtripology rules — to force myself to be as deliberate as possible about the trip.

I rarely felt the temptation to accelerate. I made peace with my pace, accepting that I would get there when I got there.

When I permit myself to follow that blue line, I sometimes lose track of where I am and forget the bigger picture. I was not going to let that happen on this trip.

It was one of the most memorable detours of my entire trip, but the blue line of a digital map would have ignored it.
story  usa  nature  park  camping  howto  driving  tips  car  advice  discovery  travel 
july 2016 by aries1988
The Diary: Jeremy Paxman — FT.com
Most British driving instructors teach “mirror, signal, manoeuvre”. The Cairene version is “honk, swerve, throttle”. It is deafening and, in its way, quite exhilarating.
expat  egypt  story  driving 
may 2016 by aries1988
MyDrive Connect
Gérez votre appareil et conduisez avec la dernière version du logiciel, des cartes et des services.
driving  gps  support 
january 2016 by aries1988
Posture Affects Standing, and Not Just the Physical Kind
I bought my current vehicle, a Toyota Sienna minivan, largely because I was immediately comfortable when I got behind the wheel for a test drive. My entire back was supported, so not a twinge was felt there, unlike what happens in many other cars. I could also easily see over the steering wheel without tilting my head back, which is not the case in most other vehicles. And I could reach the floor pedals without unduly extending my leg and straining my lower back.

Poor posture can have ill effects that radiate throughout the body, causing back and neck pain, muscle fatigue, breathing limitations, arthritic joints, digestive problems and mood disturbances. It can also create a bad impression when applying for a job, starting a relationship or making new friends.
buy  car  driving  body  health 
december 2015 by aries1988
The First Person to Hack the iPhone Built a Self-Driving Car. In His Garage.
The car does, more or less, have it. It stays true around the first bend. Near the end of the second, the Acura suddenly veers near an SUV to the right; I think of my soon-to-be-fatherless children; the car corrects itself. Amazed, I ask Hotz what it felt like the first time he got the car to work.

Dude, he says, the first time it worked was this morning.

There are two breakthroughs that make Hotz’s system possible. The first comes from the rise in computing power since the days of the Grand Challenge. He uses graphics chips that normally power video game consoles to process images pulled in by the car’s camera and speedy Intel chips to run his AI calculations. Where the Grand Challenge teams spent millions on their hardware and sensors, Hotz, using his winnings from hacking contests, spent a total of $50,000—the bulk of which ($30,000) was for the car itself.

Sometimes the Acura seemed to lock on to the car in front of it, or take cues around a curve from a neighboring car. Hotz hadn’t programmed any of these behaviors into the vehicle. He can’t really explain all the reasons it does what it does. It’s started making decisions on its own.

As Hotz puts it in developer parlance,  ‘If’ statements kill. They’re unreliable and imprecise in a real world full of vagaries and nuance. It’s better to teach the computer to be like a human, who constantly processes all kinds of visual clues and uses experience, to deal with the unexpected rather than teach it a hard-and-fast policy.

The truth is that work as we know it in its modern form has not been around that long, and I kind of want to use AI to abolish it. I want to take everyone’s jobs. Most people would be happy with that, especially the ones who don’t like their jobs. Let’s free them of mental tedium and push that to machines. In the next 10 years, you’ll see a big segment of the human labor force fall away. In 25 years, AI will be able to do almost everything a human can do. The last people with jobs will be AI programmers.

He thinks machines will take care of much of the work tied to producing food and other necessities. Humans will then be free to plug into their computers and get lost in virtual reality.

All this talk represents an evolution in Hotz’s hacker ethos. He used to rip apart products made by Apple and Sony, because he enjoyed solving hard puzzles and because he reveled in the thought of one person mucking up multibillion-dollar empires. With the car, the retail software, and the plans to roil entire economies, Hotz wants to build a reputation as a maker of the most profound products in the world—things that forever change how people live. I don’t care about money, he says. I want power. Not power over people, but power over nature and the destiny of technology. I just want to know how it all works.
ai  transport  car  driving  future  self  hacking 
december 2015 by aries1988
Buckle up | The Economist
Status-enhancing yet dangerous manoeuvres, such as driving a motorbike on one wheel, can entail a fine of up to 3m Lebanese pounds ($2,000) and even time behind bars. Learner drivers must take proper lessons rather than being taught by relatives, themselves home-schooled in the art of dodging pedestrians and potholes. “They want us to act like Europeans,” says Imad, a motorist. “OK, but in return we’d like some European-style services.”
driving  middle-east  government 
august 2015 by aries1988
Chris Urmson: How a driverless car sees the road
Statistically, the least reliable part of the car is ... the driver. Chris Urmson heads up Google's driverless car program, one of several efforts to remove…
driving  explained  ai 
july 2015 by aries1988
I was an undercover Uber driver :: Cover :: Philadelphia City Paper
Uber can provide better service at cheaper prices with UberX because, by refusing to work within the medallion system, it has far fewer costs than a regulated taxi company — the cost of medallions, owning and maintaining a fleet of cars and paying for full commercial insurance. It's not surprising that taxi medallion systems in cities all over the world are losing customers to Uber like crazy. I speak with cabbies who say they try to only do airport runs now — they can't make a profit anywhere else.
driving  business  reportage  journalist  uber 
may 2015 by aries1988
I was an undercover Uber driver
Uber can provide better service at cheaper prices with UberX because, by refusing to work within the medallion system, it has far fewer costs than a regulated taxi company — the cost of medallions, owning and maintaining a fleet of cars and paying for full commercial insurance. It's not surprising that taxi medallion systems in cities all over the world are losing customers to Uber like crazy. I speak with cabbies who say they try to only do airport runs now — they can't make a profit anywhere else.
uber  reportage  driving 
may 2015 by aries1988
People's Republic Of Uber: Making Friends, Chauffeuring People In China : Parallels : NPR
Unlike in the U.S., most here say the main reason they drive is social. They want to chat with all sorts of people and — like Xu — try to make sense of this mega-city of 24 million.
young  life  service  society  driving  story  shanghai 
may 2015 by aries1988
从伦敦到成都:一对90后情侣的49天自驾日记
杨雨昇和尹丹的实际旅行线路:英国——法国——比利时——荷兰——德国——波兰——立陶宛——拉脱维亚——爱沙尼亚——俄罗斯——哈萨克斯坦——吉尔吉斯斯坦——中国(喀什)…
driving  asia  travel 
december 2014 by aries1988
Ornikar - #PermisPourTous
Article 1: Apprendre à conduire ne devrait pas être un luxe! Signez la pétition via
france  web2.0  driving  future 
august 2014 by aries1988
Is Every Speed Limit Too Low?
Every year, traffic engineers review the speed limit on thousands of stretches of road and highway. Most are reviewed by a member of the state’s Department of Transportation, often along with a member of the state police, as is the case in Michigan. In each case, the “survey team” has a clear approach: they want to set the speed limit so that 15% of drivers exceed it and 85% of drivers drive at or below the speed limit. In its 1992 report, the U.S. Department of Transportation cautioned, “Arbitrary, unrealistic and nonuniform speed limits have created a socially acceptable disregard for speed limits.” Lt. Megge has worked on roads with a compliance rate of nearly zero percent, and a common complaint among those given traffic citations is that they were speeding no more than anyone else. With higher speed limits, Megge says, police officers could focus their resources on what really matters: drunk drivers, people who don’t wear seat belts, drivers who run red lights, and, most importantly, the smaller number of drivers who actually speed at an unreasonable rate.
people  behavior  traffic  opinion  driving  law  science 
august 2014 by aries1988
在中国开车怒气多
于是出现了一个怪现场,开车的时候骂行人和非机动车手没素质,走路骑车的时候骂司机不道德,街道上空漂浮着一股焦躁的戾气。 港台剧里最常见的台词是“我赶时间”,剧本是高于生活的艺术,现实生活里,大家带着这股凶悍的杀气,不停的在路上争抢,生怕前方有未知的东西因为跑得慢而没有得到,最可悲的是,不知道争什么,只因大家都在抢,我们的心里又空又慌。
driving 
february 2014 by aries1988
Voies péage autoroutes APRR AREA
Voie tous moyens de paiement hors télépéage Vous pouvez payer en espèces (avec rendu de monnaie, même s’il s’agit d’une caisse automatique) ou carte bancaire.
driving 
february 2014 by aries1988
关于遵守规则
不止一个人从美国回来后对我说,在美国开车习惯了在中国根本不敢开,因为中国的司机完全不按交通规则来。于是当我在加州坐了两天的副驾驶位后,有点开始明白这话真是一点不夸张。
driving 
january 2014 by aries1988
栽人最多的,不是减速而是灯光·杭州日报
根据交警部门统计,昨天在模拟夜间灯光项目上操作失误的比例达到22%,而起步未开启左转向灯达到20%,其他项目的比例是:违规变更车道11%、通过路口未减速2%、通过公共汽车站台未减速1%、靠边停车不合格4%。

而在1月13日的统计里,模拟夜间灯光不合格的占到50%,起步未开启左转向灯占16%,综合评判项目中扣分的还占49%。

杭州市车管所考试科柏红飞科长说,综合评判是一些细节的统称:比如低挡高速、溜坡、未系安全带、低头看挡等等,这些都是扣分项目。但随着考试的进行,综合评判的扣分比例已经大为下降,昨天只有20%多一点。目前扣分的最主要项目还是在灯光上。

主考官张雄说:“我们一开始以为是失分项目是在减速上,因为很多学员没养成斑马线前减速的习惯,但后来发现,减速好解决,灯光项目的失分挺高的。这与平时练得少有关系。”

这些细节你一定要注意

减速方面:听到“通过公交车站”、“前方路口直行”、“前方人行横道线”、“学校区域禁止鸣号”语音提示时,要重踩一下刹车,让系统感应到减速。

灯光方面:起步打左转向灯、靠边打右转向灯、变道或转向要提前5秒打转向灯、打转向灯后要保持3秒,模拟夜间灯光操作要熟练掌握,什么情况下要打什么样的灯。

其他:通过路口时要左右张望一下、系安全带、起步时要挂在空挡、不要溜坡、停车拉手刹、不要低头看挡、从一挡挂到四挡保持时速35公里5秒钟、通过需要减速的地点要将速度降到时速30公里以下。
driving 
january 2014 by aries1988
Limitation 30
la règle est simple : A)la limitation commence toujours au panneau, mais elle s'arrête : 1) à l'intersection 2) au panneau de fin de limitation 3) avec une nouvelle limitation (inférieure ou supérieure) B)Dans le cas des ralentisseurs, il faut distinguer si le panneau de vitesse est couplé avec le panneau de danger du ralentisseur : 1) si oui, on considère que la limite s'arrêtera après le ralentisseur (danger dépassé) 2) si non, cf A) Faut pas se prendre plus la tête que ça car faut pas oublier que les panneaux sont souvent mal positionnés.
driving 
november 2013 by aries1988
零起步,32小时路考一次通过,经验分享。 - 车友之家 - 新欧洲战法 - 手机版
我一下子没有反应过来。他接着说,你在高速上身手敏捷啊,很神勇,穿来穿去,速度又快。我说可是我忘记方向灯了。他说,是啊,不应该,最基本的东西你都忘了,不过应该没有大问题。 2 快道或高速路 (一般禁止行人和非机动车)上,一定要能快就快,开到限速。我几次都在限速以上,比方说限70,我都在72或73。所以个人认为,宁可在限速以上也不要以下,但也尽量不要超限速。 3 停车很不重要 (看我以上的经历就知道) 4 心里素质很重要,不要紧张 (这个因人而异,大家努力调节吧)
driving 
september 2013 by aries1988
外省路考小记—二次通过,27,5分 - 车友之家 - 新欧洲战法
考驾照最重要的就是concentration,再就是反映快,决定快,实施快。 很多时候要主动些,从你的叙述感觉有些被动,观察前后左右的路况要提前,要对考官随时可能发出的指令都胸有成竹,比如让左转,立刻知道有关的动作都有哪些,让右转,又有哪些。不能让考官给你发指令后,你回回都感觉很意外,很突然似的,那样考官会觉得你没有融入整个交通环境。 上了voie rapide , 我忘了关掉转向灯,忘了要换到5档上,汗阿,。然后考官让我找les chaises的方向,我找对了下了voie rapide,我以为就行了,不用再找方向了,应该是考官给方向,谁知到了一个十字路口。考官说去les chaisses 的方向应该左转,我才一惊,结果慌忙打灯靠左,是单行道,结果忘了看左边死角是否有车过来,被考官说了,这会很危险。至此知道这次是挂了。 前有一自行车,我尾随,开始时是直线,我不能超车,后来是虚线,我犹豫了
driving 
september 2013 by aries1988
无人驾驶汽车将怎样改变未来城市生活? - 纽约时报中文网 国际纵览
“我可以在我的无人驾驶汽车里睡觉,或是在车的后面放一台固定式健身脚踏车,可以在上班的路上锻炼,”他说,“我在车里度过的时间会在本质上大为不同。”
driving  from:kindle  technology  future 
july 2013 by aries1988
Pourquoi la buée se forme-t-elle sur le pare-brise ? | Espace des sciences
    Pourquoi la buée se forme-t-elle sur le pare-brise ?   Le matin, il n’est pas rare de trouver une fine couche de buée sur les vitres intérieures de votre voiture. Enfermée la veille dans l’habitacle, l’humidité de l’air s’est condensée dans la nuit sous forme de gouttelettes sur les vitres refroidies par la baisse de température. Avec le chauffage et la ventilation, la buée disparaît rapidement. Par temps sec, il peut suffire aussi de laisser une fenêtre ouverte pour assécher l’air de l’habitacle et commencer à faire évaporer la buée. La voiture démarre et, la buée partie, nous sommes tentés d’éteindre le chauffage. Erreur : une couche de buée plus épaisse se forme sur le pare-brise alors que les autres parois sont épargnées. Cette fois-ci, c’est la vapeur d’eau que vous dégagez qui se condense et préférentiellement sur la paroi la plus froide : la vitre avant qui subit de plein fouet l’air extérieur. Il faut donc continuer à chauffer le pare-brise pour que la vapeur d’eau reste sous forme gazeuse dans la voiture ne gênant plus votre visibilité.
driving  life  code 
may 2013 by aries1988
China’s motorways: Get your kicks on Route G6 | The Economist
http://article.yeeyan.org/view/358896/342559
It is a slow toil through much of Inner Mongolia, as Zheng Jie found when she drove along the G6 with her husband and father on their way back from Tibet in October. Ms Zheng, who runs a headhunting firm in Beijing, laments what she calls a “blank space” of road-themed music to accompany China’s fast-developing car culture. There is no equivalent yet of Willie Nelson’s “On the Road Again” to get drivers in the mood (she and her passengers spent much of their journey listening to syrupy new-age music). There is sadly little relief on the G6 in the form of what might be called highway haiku: garbled English translations on motorway signs that in their highest form have a poetic quality matching the rhythm of the road. Only one example worthy of the description offers itself (albeit hypnotically repeated) on the G6 Tibet-bound Rain or snowy day Bridge, slow driving
Tibet  report  music  driving  tourism 
december 2012 by aries1988
新交规来了,你的12分够扣几次 - 环球科技观光团 - 果壳网 guokr.com
新修订的《机动车驾驶证申领和使用规定》出台,驾驶证使用扣分规则有了很多调整。明年1月1日起,日常行驶中需要注意的扣分的项目都有哪些呢?
driving  googlereader 
october 2012 by aries1988
Let the Robot Drive: The Autonomous Car of the Future Is Here
As we drive the Google car—or are driven by it—I watch the action unfold on the computer monitor mounted on the passenger side of the dashboard. It shows how the car is interpreting the world: lanes, signs, cars, speeds, distances, vectors. The rendering is nothing special—a lot of blocky wireframe that puts me in mind of Atari’s classic Battlezone. (The display is just one of a host of geeky details—to change lanes, for instance, the driver presses buttons marked Shift and Left on a keyboard near the monitor.) Yet it is absolutely fascinating, almost illicitly thrilling, to watch as the car not only plots and calculates the myriad movements of neighboring vehicles in the moment but also predicts where they will be in the future, like high-speed, mobile chess. Onscreen, the car is constantly “acquiring” targets, surrounding them in red boxes, tracing raster lines to and fro, a freeway version of John Madden’s Telestrator. “We’re analyzing and predicting the world 20 times a second,” Levandowski says. http://www.instapaper.com/read/245581454
driving  google 
august 2012 by aries1988
中国的车祸为什么多
要拯救我们身边将要在车祸中丧生或受伤的亲人和朋友,最可行和最快的方法是改革中国的交通管理的理念和体系.交通管理和工厂管理一样,本质上是一门科学.中国的工厂可以引进国外先进的管理经验,为什么交通管理不能引进别人的经验? http://www.instapaper.com/read/214472037
safety  moi  debate  driving  instapaper_favs  death 
august 2012 by aries1988

Copy this bookmark:





to read