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Old February 19th, 2012, 07:30 PM   #141
Yuri S Andrade
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São Paulo Rodoanel, 177 km


R7

West and South sections completed. East under construction and North to be started. About 19 million people and 8 million cars are inside the ringway.
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Old February 20th, 2012, 04:41 PM   #142
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Did we have this one already? Vienna "Regionenring":



195-203km. Approximately 175km finished.
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Old December 29th, 2014, 10:36 PM   #143
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Quote:
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São Paulo Rodoanel, 177 km
I was looking closer, and I noticed São Paulo Ringroad encircles completely the urban areas of 12 municipalities (out of 39) of São Paulo metropolitan area.

As 2014, 17,348,578 people live on them, and therefore, surrounded by the ringroad. Is there anywhere in the world a ringroad encircling more people?
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Old December 29th, 2014, 10:55 PM   #144
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The Zhusanjiao Ring Expressway in Guangdong, China encircles the Pearl River Delta. It is quoted that some 50 million people live there. The Zhusanjiao Ring Expressway (G94) is 338 kilometers long.
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Old December 29th, 2014, 11:05 PM   #145
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The Zhusanjiao Ring Expressway in Guangdong, China encircles the Pearl River Delta. It is quoted that some 50 million people live there. The Zhusanjiao Ring Expressway (G94) is 338 kilometers long.
Is this G94 completed? I found difficult to track it on the map.

I was checking Seoul, and it encircles the city proper plus some suburbs. I would guess something like 14-15 million people. There are also the series of ringroads encircling Beijing. The outer one might get 17 million people inside it but I'm not sure.
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Old December 30th, 2014, 02:19 PM   #146
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Quote:
Originally Posted by Yuri S Andrade View Post
Is this G94 completed? I found difficult to track it on the map.

I was checking Seoul, and it encircles the city proper plus some suburbs. I would guess something like 14-15 million people. There are also the series of ringroads encircling Beijing. The outer one might get 17 million people inside it but I'm not sure.
This very sophisticated website www.citypopulation.de contains city/municipality population statistics worldwide, with interactive maps. It is possible (with a little patience) to count the correct population totals inside Pearl River Delta and Beijing ring roads. I checked Seoul and the population inside the ring road seems to be roughly 14 million.
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Old December 30th, 2014, 07:51 PM   #147
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Quote:
Originally Posted by rheintram View Post
Did we have this one already? Vienna "Regionenring":



195-203km. Approximately 175km finished.
I think that ring road around Vienna is never going to be finished,because it's not needed in my opinion.There are already some motorways that connect others and they are some sort of ring road.
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Old December 30th, 2014, 08:02 PM   #148
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It is already completed (as in: drivable via A23, the S1 east of Vienna is still missing).
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Old December 30th, 2014, 08:23 PM   #149
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I meant on purple road.
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Old December 30th, 2014, 08:28 PM   #150
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Yes, it is completed except for S1 between Schwechat and Süßenbrunn. But you can drive that stretch via A23. S5 & S33 are open to traffic. The last part of S33 opened in 2010, including the bridge across the Danube.
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Old July 9th, 2017, 09:31 PM   #151
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Chengdu 2nd ringroad is about 224 km long which seems to be the longest classical expressway ringroad in the world. Correct me if there is something longer.
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Old July 9th, 2017, 09:39 PM   #152
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At some point it becomes vague what is the longest ring road, since they are so far away from the main city that it loses its function as a classic ring road.

Several long ring roads are completed or under development in China;

* G98 Hainan Ring Expressway: 613 km
* G95 Capital Area Expressway / 7th Ring Road around Beijing: 924 kilometers (some 624 km completed)
* G94 Pearl River Delta Ring Expressway: 338 km
* G93 Chengyu Ring Expressway: 1057 km (completed)

G98 encircles the entire island of Hainan. Although technically a ring road, it does not encircle a city or metropolitan area

G95 is a full ring road of Beijing but especially on the north side it is very far from Beijing.

G94 is a regional ring road of the Pearl River Delta metropolis. It runs through Hong Kong to make a full loop. It functions more like a collection of expressways than a true beltway of Guangzhou

G93 is more of a concept than a true ring road. Although it forms a full loop that serves both Chengdu and Chongqing, it can hardly be considered a real functional ring road, much like the Grand contournement de Paris
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Old July 9th, 2017, 10:52 PM   #153
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@ChrisZwolle, You are right that it became vague. However I still think it makes sense to look at the ring roads that satisfy the following conditions:
1. They are closed loops
2. They encirle one main city or it's agglomeration
3. They are approximately circular in shape

Of course these conditions are somewhat vague but I think we can agree that ring roads of London, Moscow (MKAD), Beijing or Chengdu are all good examples of such rings.
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Old July 9th, 2017, 10:57 PM   #154
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How about a requirement that it have the same number all the way around? Which rules out the Grand contournement.

(Of course, there was a time that rule would have ruled out the Capital Beltway; the parts of it that carry the I-95 designation were not included in 495 for a while....)
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Old July 9th, 2017, 11:20 PM   #155
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Tokyo's Ken-O Expressway forms a 282 kilometer loop around the city, but the southern connection has to be made via alternate crossings (and is not counted in the length, which would put it over 330 km).

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