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Author Topic: Roundabout junctions  (Read 53171 times)

Chris

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Re: Roundabout junctions
« Reply #50 on: February 02, 2009, 03:27:11 AM »

You can see me negotiate a bunch of roundabouts in this video.

Taken in a new neighborhood of my city.
http://nl.youtube.com/watch?v=likZwFiisGs&ap=%2526fmt%3D18
« Last Edit: February 02, 2009, 03:29:09 AM by Chris »
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Bryant5493

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Re: Roundabout junctions
« Reply #51 on: February 03, 2009, 11:04:13 AM »

Here are two videos that I made of some roundabout junctions: the top video is located in Douglas County, Georgia and the bottom video is located in Southwest Atlanta.

http://www.youtube.com/watch?v=hNdHolB_59M

http://www.youtube.com/watch?v=LVD2g74p3mI


Be Well,

Bryant
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Urban Prairie Schooner

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Re: Roundabout junctions
« Reply #52 on: February 03, 2009, 09:04:24 PM »

U.S. 61 and Causeway Boulevard, one of my all time favorite interchanges

At night it's even more spectacular, all the brownish-yellow lights illuminate it like a Christmas tree.

Constructed 1959; a living symbol of Jefferson Parish: from shining and gleaming with the first suburban growth wave to the semi-dilapidated condition of today, mirroring East Jefferson's current first generation suburban decay.

Interestingly, it has never borne a name, even an official one so far as I know. Folks in New Orleans just call it "Causeway and Airline" or some such. My proposed name for it would be the "Shrewsbury Four Level." In the photo all levels - Airline Hwy. underpass, railroad, elevated roundabout, Causeway Blvd. viaduct - can be observed at once.
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Tarkus

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Re: Roundabout junctions
« Reply #53 on: February 03, 2009, 09:25:24 PM »

WSDOT has an instructional video:

http://www.wsdot.wa.gov/eesc/CAE/designvisualization/video/Portfolio/Modern_Roundabouts/mpg_index.htm

I couldn't help but laugh at that video the first time I saw it.  The very fact that various transportation agencies here in the US are making instructional videos to show people how to drive roundabouts speaks loads to how many folks here just don't get roundabouts.

-Alex (Tarkus)
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rawr apples

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Re: Roundabout junctions
« Reply #54 on: February 03, 2009, 09:34:50 PM »

I always think those are an insult to my intelligence
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Bryant5493

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Re: Roundabout junctions
« Reply #55 on: February 03, 2009, 11:23:40 PM »

Click the link below to access a site about the "modern roundabout," presented by the Arizona Department of Transportation.

http://www.dot.state.az.us/CCPartnerships/Roundabouts/index.asp


Be well,

Bryant
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rawr apples

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Re: Roundabout junctions
« Reply #56 on: February 03, 2009, 11:33:49 PM »

I also hate that they slabbed the word 'modern' onto it.  I hate that word. of any usage
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Alex

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Re: Roundabout junctions
« Reply #57 on: February 03, 2009, 11:36:55 PM »

U.S. 61 and Causeway Boulevard, one of my all time favorite interchanges

At night it's even more spectacular, all the brownish-yellow lights illuminate it like a Christmas tree.


Years ago Andy and I decided to try out the tripod at night within the interchange:



And I totally agree with the statement you made above.

Scott5114

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Re: Roundabout junctions
« Reply #58 on: February 04, 2009, 06:08:17 AM »

Kansas is becoming quite fond of the stupid things, much to my chagrin; KDOT loves to construct them not just at "normal" places like urban areas and near freeway interchanges but also at random highway intersections in the middle of nowhere. Imagine driving along at 65 MPH for a few dozen miles and randomly being dumped into one. Bit jarring.
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Ian

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Re: Roundabout junctions
« Reply #59 on: February 04, 2009, 08:30:58 AM »

Has any1 mentioned about the twin roundabout interchange on I-87 @ NY 67 in Malta, NY? On NY 67 in Malta, NY, there are about 5 roundabouts in a row! Lookee here:
http://maps.google.com/maps?f=q&source=s_q&hl=en&geocode=&q=Malta,+NY&sll=37.0625,-95.677068&sspn=42.089199,92.8125&ie=UTF8&ll=42.970461,-73.800852&spn=0.00953,0.022659&t=h&z=16

Also note Googles little route shield error to the right. It is signed as a state route 9 when should be US 9!

ic
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Snappyjack

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Re: Roundabout junctions
« Reply #60 on: February 04, 2009, 11:27:05 AM »

Kansas is becoming quite fond of the stupid things, much to my chagrin; KDOT loves to construct them not just at "normal" places like urban areas and near freeway interchanges but also at random highway intersections in the middle of nowhere. Imagine driving along at 65 MPH for a few dozen miles and randomly being dumped into one. Bit jarring.

sounds like New York :-P
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tdindy88

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Re: Roundabout junctions
« Reply #61 on: February 11, 2009, 02:54:21 PM »

Carmel, Indiana, a northern suburb of Indianapolis, likely is the Roundabout capital of the Midwest. The city has about 50 of them installed a many interchanges and is currently upgrading Keystone Ave. (former Indiana 431) into a parkway that has the dumbell roundabout interchanges at each junction. The trend is showing up up in other Indy suburbs as well, although the most famous one is the Monument Circle in the center of downtown Indy, though that is more of a traffic circle than a roundabout.
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Bryant5493

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Re: Roundabout junctions
« Reply #62 on: February 12, 2009, 08:53:53 AM »

Here's a video of how a roundabout works, presented by the Missouri Department of Transportion (MoDot).

http://www.youtube.com/watch?v=b2x8OI5ixRg&eurl=http://www.modot.mo.gov/central/major_projects/roundabout.htm

Also, here's a brochure about roundabouts.

http://www.modot.mo.gov/central/major_projects/documents/233.3_DrivingtheRoundaboutWay.pdf


Be well,

Bryant
« Last Edit: February 12, 2009, 08:57:22 AM by Bryant5493 »
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Chris

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Re: Roundabout junctions
« Reply #63 on: February 12, 2009, 01:30:43 PM »

Carmel, Indiana, a northern suburb of Indianapolis, likely is the Roundabout capital of the Midwest.

Thanks for the tip, I'll check them out on Google Earth. I am so used to roundabouts, I think I drove across like 15 or 20 today...

MIRoadMan

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Re: Roundabout junctions
« Reply #64 on: February 12, 2009, 05:48:55 PM »

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TheStranger

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Truvelo

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Re: Roundabout junctions
« Reply #66 on: February 13, 2009, 02:56:26 PM »





Hmmm, looks like a vollyball except with a traffic circle. It looks like it would move traffic, but who knows.


It depends where they're used and how much turning traffic there is. We have some here in the UK at the junction of major freeways and they cause havoc because the turning movements are not freeflow. Most of them have had traffic lights fitted at all the approaches but this still doesn't solve the lack of capacity. One of them now has direct connectors added for two of the movements in addition to the traffic lights but it's still plauged by heavy traffic.
« Last Edit: February 13, 2009, 03:00:33 PM by Truvelo »
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Re: Roundabout junctions
« Reply #67 on: March 22, 2009, 01:51:38 PM »

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Bryant5493

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Re: Roundabout junctions
« Reply #68 on: April 12, 2009, 05:45:39 PM »

Here's a better photo of the roundabout at the intersection of S.R. 5 and S.R 166, just south of Douglasville, Georgia.




Be well,

Bryant
« Last Edit: September 18, 2010, 01:09:36 AM by Bryant5493 »
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Tom

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Re: Roundabout junctions
« Reply #69 on: September 17, 2010, 08:06:54 PM »

I can think of 2 roundabouts in Michigan.  One is just south of Clare, where old US-27 junctions with BUS US-127, and the other is at old US-27 and a city street by Gaylord High School. :coffee:
« Last Edit: October 03, 2010, 04:06:08 PM by Tom »
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mgk920

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Re: Roundabout junctions
« Reply #70 on: September 18, 2010, 01:32:22 AM »

They're becoming extremely common here in Wisconsin.

Mike
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Bryant5493

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Re: Roundabout junctions
« Reply #71 on: September 18, 2010, 02:02:30 AM »

^^

Aren't there quite a few by Lambeau Field?


Be well,

Bryant
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SSOWorld

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Re: Roundabout junctions
« Reply #72 on: September 18, 2010, 03:14:36 AM »

not yet I believe - but once the US 41 project is done there will be.

The first of two so far is under construction in Platteville on a new alignment to connect UW-Plateville to US 151.
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english si

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Re: Roundabout junctions
« Reply #73 on: September 18, 2010, 08:12:15 AM »

Depending how you want to count it, in my (pretty small - 17k pop) town, there's either 6, or 23. The 23 includes mini roundabouts. Of course, that's just typical suburban/semi-rural England
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Re: Roundabout junctions
« Reply #74 on: September 18, 2010, 01:17:47 PM »

Quote

Weaving...
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