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Old October 8th, 2010, 10:14 PM   #1601
Surel
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Quote:
Originally Posted by Atmosphere View Post
Yeah that was what I was thinking too. Still only 26 million cars in 2009....The biggest growth has yet to come.
The growth is more or less stable... The sustainability of this growht is however question.

Its not probable that the world would be able to sustain almost tripple the EU+USA car quantity given the same car penetration and current energy consumtpion levels in these countries.
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Old October 8th, 2010, 10:38 PM   #1602
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That is why we need other portable energy sources, that are sustainable and affordable. Electricity looks promising, since it is possible to generate it in a sustainable and commercial scale, but the range of electric cars is still a problem. Right now, electricity is interesting for households with a second car, which do not travel long distances. (city cars). Another problem of electricity right now is its power, you cannot power a commercial van or truck for long distances yet.
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Old October 9th, 2010, 12:23 AM   #1603
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Quote:
Originally Posted by Surel View Post
The growth is more or less stable... The sustainability of this growht is however question.

Its not probable that the world would be able to sustain almost tripple the EU+USA car quantity given the same car penetration and current energy consumtpion levels in these countries.
Look at it this way

If a car typically lasts 10years, then you need to produce an average of 50million cars per year to sustain a car population of 500million.

I think that ends up as an additional 20 million barrels per day (MBPD) of oil. This is a huge amount of new oil to produce, which the planners don't think can be produced economically.

So this explains the push into electric and alternative fuel vehicles, even though they're not economically viable at this time.
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Old October 9th, 2010, 12:23 AM   #1604
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That is why we need other portable energy sources, that are sustainable and affordable. Electricity looks promising, since it is possible to generate it in a sustainable and commercial scale, but the range of electric cars is still a problem. Right now, electricity is interesting for households with a second car, which do not travel long distances. (city cars). Another problem of electricity right now is its power, you cannot power a commercial van or truck for long distances yet.
Yup...

The only possible portable and high capacity storage of electricity that I can see is in the hydrogen. However the effectivity is rather low... Neverthless, hydrogen could also solve the problems of "green" wind, sea, light, electricity sources = the volatility of the production of these sources. Wind turbine may indefinetly produce hydrogen, which can be then once in a time collected (harvested).

The only sollution for the power grid are then the nuclear power plants, especially the newer generations (e.g. the breeder reactors). I already discussed some ideas I have about the infrastructure of the future...
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Old October 9th, 2010, 12:23 PM   #1605
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Hefei West elevated road. Opened on Septmeber 30 this year. Posted by XYF123.
















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Old October 9th, 2010, 03:09 PM   #1606
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Personally I think China of all countries needs to most seriously consider alternative modes of transport to the car. Car ownership should stay well below European levels simply because the country is too densely populated it'd be sad indeed if everywhere was turned into massive superhighways (OK that's a hyperbole). Modern city planning in China does not seem to emphasize enough on urban realm, accessibility and permeability, i.e. features that pedestrians find 'nice' to walk in or easy to access public transport of all kinds, so woud dissuade people from buying and using cars.
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Old October 10th, 2010, 02:16 PM   #1607
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I agree. They should build tons of railways everywhere, so that railways become the people's favourite transport by far. About highways, double or even multi level highways as well as underground highways should become very common in a mid term.
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Old October 18th, 2010, 02:33 PM   #1608
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Old October 18th, 2010, 03:13 PM   #1609
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jinghu-ningtong-yanjiang expressway?
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Old October 18th, 2010, 03:34 PM   #1610
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Sorry for my ignorance, but I don't quite understand the Chinese road classification system. If you read about Chinese National Highways on wikipedia, it says that not all of them are of expressway standard. Does this mean that some of them are below expressway standard? If so then how many motorway standard roads are there in China?
i am not a native english speaker, i dont know the difference of "high way,expressway, free way" .
in china, 高速公路(high speed road by character means) is the only word , and has very clear and stricktly definition:能适应年平均昼夜小客车交通量为25000辆以上、专供汽车分道高速行驶、并全部控制出入的公路”。一般能适应120公里/小时或者更高的速度,要求路线顺畅,纵坡平缓,路面有4个以上车道的宽度。中间设置分隔带,采用沥青混凝土或水泥混凝土高级路面,为保证行车安全设有齐全的标志、标线、信号及照明装置;禁止行人和非机动车在路上行走,与其他线路采用立体交叉、行人跨线桥或地道通过。
i'll tring to translation: Can adapt the annual average day for more than 25,000 passenger traffic; high-speed, general can adapt to 120 kilometers per hour or higher speed, closed with no traffic lights,smooth, longitudinal grade, at least 4 lanes, completed symbols and lines, signal and lighting devices, prohibit the pedestrian and walk in the streets, and other lines using three-dimensional, pedestrian tunnels or by increases.
so i dont think "not all of them are of expressway standard". we have tons of nice road with say sommth paved 12 lanes ways, but no one call them "高速公路".
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Old October 18th, 2010, 03:38 PM   #1611
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Highway = any (major) public road, usually one lane per direction.

Expressway = substandard freeway in Europe / United States, but a full freeway-standard road (see below) in Asia and eastern U.S.

Freeway = full freeway: 100 - 130 km/h, at least 2x2 lanes, median, shoulders, grade-separation.

Thus, freeway equals Asian expressways. (Japan, Malaysia, Singapore, China, Taiwan, Thailand, Philippines, etc)
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Old October 18th, 2010, 04:02 PM   #1612
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Originally Posted by oliver999 View Post
jinghu-ningtong-yanjiang expressway?
Some of the photos were taken from the expressways you mentioned.
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Old October 18th, 2010, 04:28 PM   #1613
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高速公路, Gaosu Gonglu, means expressway, as far as I know.
BTW, the second photo was taken near the Northern terminus of the G35 aka Jiguang Expressway.
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Old October 19th, 2010, 08:43 AM   #1614
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Quote:
Originally Posted by bleetz View Post
Sorry for my ignorance, but I don't quite understand the Chinese road classification system. If you read about Chinese National Highways on wikipedia, it says that not all of them are of expressway standard. Does this mean that some of them are below expressway standard? If so then how many motorway standard roads are there in China?
What the article is trying to say is that in China there isn't a separate numbering system for expressways; for example, The road Lhasa -> Shigatse -> Nepal (G318) is a G-road, but expressways are most of the time also G-roads.
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Old October 19th, 2010, 01:23 PM   #1615
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Quote:
Originally Posted by ChrisZwolle View Post
Highway = any (major) public road, usually one lane per direction.

Expressway = substandard freeway in Europe / United States, but a full freeway-standard road (see below) in Asia and eastern U.S.

Freeway = full freeway: 100 - 130 km/h, at least 2x2 lanes, median, shoulders, grade-separation.

Thus, freeway equals Asian expressways. (Japan, Malaysia, Singapore, China, Taiwan, Thailand, Philippines, etc)
From an English - Chinese Dictionary:

Expressway = 高速道路、快速干道

Freeway = 高速公路


Still the same thing.
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Old October 19th, 2010, 03:23 PM   #1616
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Old October 19th, 2010, 04:10 PM   #1617
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Why 2 zebras so close next to each other? Does this road (bridge) even have sidewalks?

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Old October 19th, 2010, 04:22 PM   #1618
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They aren't really zebras. I've seen plenty of such zebra-like marks on full-fledged expressways. I guess they're used to reduce speed on expressways ( maybe by fooling people that there's a pedestrian crossing there? )
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Old October 19th, 2010, 05:32 PM   #1619
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Speed camera would be a better solution.
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Old October 19th, 2010, 08:12 PM   #1620
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Those are distance indication marks to help drivers visually gauge and keep following distance.
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