6 years ago were negative: bar iron the most unlikely place-bar iron, Airbus-IT information

Quartz Web site of China's "bar iron" were introduced, and several major risks in the project are listed. BA iron company, the site's repeated requests for comment, but was rejected. Following is the text:

About 40 years ago, the United States architect keleige·huojite (Craig Hodgetts) and laisite·woke (Lester Walker) envisaged in New York built a bus could be above the road in General.

This avant-garde ideas attracted some media attention, but has never become a reality-but, in China's Hebei province this month, there is a similar project were tested.

According to the Xinhua News Agency reported on August 2, headquartered in Beijing and Pakistan in Qinhuangdao on China's leading iron straddling bus (width height tram) carried out its first road test.

Design of bar iron and Huo Jite and Walker's ideas have some significant differences. Concept vehicles far more of the latter, you can take the regular bus load. But they all belong to the cross-vertical transport.

Bar iron requires specialized track, so more like a train, rather than a bus. Bar iron Middle Tower, sliding forward on the side rail on both sides. It receives power through track, winds of 40 to 60 km/h, using solar power. On the company's Web site says Bart's body is divided into four sections, each section is 12 meters long, total length of 58 to 62 m.

Some Chinese cities are crowded, bar iron's purpose is to reduce air pollution and traffic congestion. Netherlands according to the navigation company TomTom, 50 of the world's most crowded cities, 15 in China. And the rail company said this in 15 cities of zhoukou, Nan Yang, Shenyang and Tianjin, Qinhuangdao city, there is also a, BA iron, are scheduled to run pilot projects. France, and Brazil, and India and Indonesia and other countries have also expressed interest in the project.

But not everyone supports this project. Many people are worried about the bar iron security, especially in how it relates to the general traffic flow issues affecting each other. The view was also expressed, pilot cities already have sound transportation infrastructure, there is no longer any need to introduce bar iron.

We are going to some of these articles to Huo Jite. He is now Professor of architecture at the University of California, Los Angeles. Huo Jite says, this project seems to be "immature", some "fundamental problems".

In China some people also hold similar views on this project. When the concept of bar iron made in 2010, has caused some concern. Academy of urban planning and design, Tsinghua University Professor Yin Zhi recently said in an interview with the newspaper, this project 6 years ago as unrealistic was rejected by a panel of experts, and now it is back, back in the public eye.

Effect of BA tie on daily traffic, it concerns mainly the following aspects:

· Is too low. Space is only 2.1 meters below the bar iron. So trucks could be stuck. But we should also be realistic: people like in a variety of vehicles above everything, sometimes you want to guess.

· Space is too small. Iron across two lanes of traffic on BA. But sometimes the drive needs to turn, even if modest, turning space will be very small. If you need when turning, located just below the bar iron, that only good luck--particularly a lane with cars of the time. Huo Jite said small spaces have a psychological impact on drivers, making them feel nervous.

· Visibility problems. Know Web site, Qinhuangdao native, graduated from Beijing Jiaotong University, said Wang Zhaoyang, iron following in Pakistan, it is difficult to see road signs and traffic lights.

· Signal problem. How do drivers know Ba Tiezheng near to the back? If the traffic halt, they chose the wrong time to open the door, what could it be? If they wanted to be in the process of driving in normal road, then what?

· Turning problems. BA tie the corners have any effect? If the Palestinian side of the iron block, you just can't turn turn.

Bar iron availability there are a number of other issues:

· Cars is too high. According to the global times reported that railway experts from Tongji University in Shanghai Sun Zhang points out that bar of iron with a height of 4.5 meters, and most likely some of the flyovers occur collisions,

· Electric track is exposed. "BA iron needs at least 1500 Volt high voltage electricity," has 16 years of experience in railway engineer Wang Lin (sound) message, "says 1500 volt power rail is exposed, the equivalent of a time bomb. Track laying on the road is one of the most electric of outdated technology, 1890 is just with the power of the technology. ”

· Too heavy. Bar iron for a total of four cars, each weighing 15 tons and can accommodate 300 passengers. Assuming that each passenger an average of 70 kg, it is likely to exceed the total weight of 150 tons. Such a load at least will shorten the life of the highway.

· Operability. From the length of the iron, it can be difficult to turn, to be without prejudice to other vehicles turning more difficult. Not every city has a long straight without turning, just the need for public transport.

· Costs. Each Ba Tiecheng is approximately $ 4.5 million, this economy has been questioned by some people. Reconstruction of infrastructure (such as the need to enhance the height of some overpasses) requires use of urban construction funds. Simpler solutions are better? Huo Jite believes that BA iron should be selected, if you want to build in places where underdeveloped transportation system, such as Urumqi.

Quartz has invited Pakistani railway company to comment on these issues, but they refused.

6年前就被否定：巴铁这些地方最不靠谱 - 巴铁,空中巴士 - IT资讯

Quartz网站日前对中国“巴铁”进行了介绍，并列举了该项目的几个重大隐患。该网站再三请求巴铁公司对此置评，但遭到了拒绝。以下为原文：

大约40年前，美国建筑师克雷格·霍吉特（Craig Hodgetts）和莱斯特·沃克（Lester Walker）设想在纽约兴建一种可以在普通道路上方行驶的巴士。

这个前卫想法引起了一些媒体的关注，但却从来没有变成现实——不过，本月在中国河北省，有一个类似的项目进行了测试。

据新华社8月2日报道，总部设在北京的巴铁科技发展公司在秦皇岛市对立体快巴（宽体高架电车）进行了首次路面测试。

巴铁的设计和霍吉特与沃克的构想有一些重大区别。后者构想的车辆远远更大，可以把普通巴士装入其中。不过它们都属于跨立式的交通工具。

巴铁需要专门的轨道，因此更像是火车，而不是巴士。巴铁的中间部分高耸，两面的侧边在轨道上滑动前进。它通过轨道接收电力，时速为40至60公里，部分采用太阳能供电。该公司的网站上说，巴特车身分为四节，每节长12米，总长58至62米。

中国有些城市十分拥挤，巴铁的宗旨是减轻空气污染和交通堵塞。荷兰导航公司TomTom的资料显示，世界上最拥挤的50个城市有15个在中国。而巴铁公司表示，这15个城市中的周口、南阳、沈阳和天津，另外还有一个秦皇岛市，都计划试点运行巴铁项目。法国、巴西、印度和印度尼西亚等国家也都表达了这个项目的兴趣。

但是并非所有人都支持这个项目。很多人都对巴铁的安全性感到担忧，尤其是在它如何与一般车流互相影响的问题。还有人表示，试点城市已经具备了比较完善的交通基础设施，根本没有必要再引进巴铁。

我们将其中一些文章发给了霍吉特。他现在已经是加州大学洛杉矶分校的建筑学教授。霍吉特说，这个项目似乎“不成熟”，存在一些“基本问题”。

中国国内一些人对这个项目也有类似的看法。巴铁的概念在2010年提出的时候，曾引起不少关注。清华大学城市规划设计研究院教授尹稚近日在接受《环球时报》采访时说，这个项目6年前就因为不切实际被一个专家小组否定了，现在它又卷土重来，回到了公众视野中。

关于巴铁对日常交通的影响，人们主要存在以下几个方面的担心：

·太低。巴铁下方空间只有2.1米。所以卡车可能被它卡住。而且我们也应该面对现实：人们喜欢在各种车辆上面装各种东西，有时候让你想都想不到。

·空间太狭小。巴铁横跨在两条车道之上。但是有时候开车需要转弯，哪怕幅度不大，转弯的空间也会很狭小。如果你需要转弯的时候，正好位于巴铁下面，那只有祝你好运了——特别另外一条车道上也有车的时候。霍吉特说，狭小的空间会对司机产生心理影响，让他们感到紧张。

·能见度问题。在知乎网站上，秦皇岛本地人、毕业于北京交通大学的王兆洋说，在巴铁下面行驶，要看到道路标志和交通信号灯很困难。

·信号问题。司机怎么知道后面有巴铁正在靠近？如果交通停滞，他们选择了错误的时机打开车门，那会怎么样？如果他们在正常开车过程中想变道，那又怎么办？

·转弯问题。巴铁对一般车辆转弯有什么影响？如果被巴铁的侧面挡住，你就转不了弯。

巴铁的实用性还有一些其他方面的问题：

·车厢过高。据《环球时报》报道，上海同济大学铁路专家孙章指出，巴铁高度为4.5米，很有可能和一些立交桥发生碰撞，

·电动轨道裸露在外。“巴铁需要至少1500伏特的高压电力，”有16年经验的铁路工程师王林（音）留言说，“1500伏的电动轨道裸露在外，相当于一颗定时炸弹。把电动轨道铺设在路上是一种非常落后的技术，是1890年代大家刚刚用上电的时候的技术。”

·太沉重。巴铁总共有四节车厢，每节重15吨，能容纳300名乘客。假设每个乘客平均70公斤，它的总重量就可能超过150吨。这样的负载量最起码也会缩短公路的使用寿命。

·可操作性。从巴铁的长度来看，它要转弯可能很困难，要想在不影响其他车辆的情况下转弯就更难了。不是每个城市都有很长的一条直路不用转弯，而正好又需要有公共交通工具。

·成本。每架巴铁成本约为450万美元，这样的经济性受到了一些人的质疑。改造基础设施（比如需要提升一些立交桥的高度）需要动用城市建设资金。采用更简单的解决方案岂不是更好吗？霍吉特认为，就算要修建巴铁也应该选在那些交通系统尚不发达的地方，比如乌鲁木齐。

Quartz多次请巴铁公司对这些问题进行置评，但遭到了他们的拒绝。