Roundabout junctions

[DAL764]

they're huge in Europe of course.

Very true. Can be annoying at times, but then again, we occasionally are also graced with quite a few nicely designed ones, like this one on the A26 near Stade, Germany (opened around 3 months ago):

Wouldn't mind if they build more roundabouts like that .

[Chris]

^^ That's not really a classic roundabout, more like a traffic circle.

Dutch rotondomania:

[Bryant5493]

Never seen a roundabout interchange. It's very cool looking.

But there are a few roundabout intersections in Metro Atlanta. I wish that there were more.

[Michael]

US 15/NY 17 (now US 15/I-86) was one at one time (pic).  It was converted to a diamond, and now has been converted a second time to a T interchange in anticipation of I-99.

[Alex]

Funny I mentioned the same U.S. 15/NY-17 interchange in the Interstate 99 thread. 

[agentsteel53]

how about this one from the Henry Hudson Parkway (New York City) in the late 30s?

http://www.nyc-architecture.com/SPEC/088.jpg

[rawr apples]

There's a few in New york, mainly along the coastline freeways i've noticed though

There is also a 3-level stacked in New Orleans
http://maps.google.com/maps?hl=en&q=new+orleans,+la&ie=UTF8&split=0&gl=us&ll=29.973905,-90.155879&spn=0.005985,0.009656&t=k&z=17

Farthest i've seen out of New England

[Alex]

There's a few in New york, mainly along the coastline freeways i've noticed though

There is also a 3-level stacked in New Orleans
http://maps.google.com/maps?hl=en&q=new+orleans,+la&ie=UTF8&split=0&gl=us&ll=29.973905,-90.155879&spn=0.005985,0.009656&t=k&z=17

Farthest i've seen out of New England

Thats the same interchange I posted a photo of on the first page of this thread. 

[Scott5114]

^^ That's not really a classic roundabout, more like a traffic circle.

I've never really understood the difference...

[Chris]

Traffic circles can also be traffic-light controlled.

[UptownRoadGeek]

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



Taken 11/20/08.

[rawr apples]

ah did not notice

looks pretty cool from the road. so big.

[John]

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

[TheHighwayMan3561]

West 70th Street in Edina, MN had 3 roundabouts installed last summer.

[ComputerGuy]

How about the magic roundabout...

[rawr apples]

Thats a bit much for the average american to even comprehend. they can barely get regular roundabout

[Bryant5493]

The "Magic Roundabout" looks complex, but fun to drive.


Be well,

Bryant

[Chris]

Thats a bit much for the average american to even comprehend. they can barely get regular roundabout

I think that nobody who doesn't drive there regularly can comprehend such roundabouts.

[UptownRoadGeek]

How about the magic roundabout...

Wow, I actually get it. I had to stare at it for about 5 min., but I get it.  I agree that is too much for the average American to handle.

[ComputerGuy]

Yeah...first of all, the cars are flowing in the opposite direction from America, second we don't have 8 mini-roundabouts inside one huge one.

[rawr apples]

Gotta love the British 

[DAL764]

I agree that is too much for the average American to handle.

Not just the average American, pretty much every average non-Brit  . Granted, I have figured out how it's supposed to work, but actually driving up to that roundabout and be faced with the quest of having to chose the right turns would be a whole different story  .

[Bryant5493]

Here's a video of an American roundabout, located in Douglas County, Georgia. This roundabout is located at the intersection of SR 5 and SR 166, eighteen miles or so west of Atlanta.

Roundabout appears 4:21 into the video.

http://www.youtube.com/watch?v=Qi3paqc8Blk

Be well,

Bryant

[ComputerGuy]

WSDOT has an instructional video:

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

[rawr apples]

I make a point of driving through roundabouts whenever im driving near one..driving on I-70 in colorado I exited at almost every ski-town with roundabout junctions. my mum wasnt very understanding.