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Are Diverging Diamond Interchanges a problem? Login/Join 
Get my pies
outta the oven!

Picture of PASig
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People here in PA would be going the wrong way on that in no time flat.

We have a ton of older drivers and a ton of reckless/idiot drivers and that's a bad combination to have.



 
Posts: 35154 | Location: Pennsylvania | Registered: November 12, 2007Reply With QuoteReport This Post
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Picture of Perception
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I haven't seen one in person, but it looks awesome.




"The people hate the lizards and the lizards rule the people."
"Odd," said Arthur, "I thought you said it was a democracy."
"I did," said Ford, "it is."
"So," said Arthur, hoping he wasn't sounding ridiculously obtuse, "why don't the people get rid of the lizards?"
"It honestly doesn't occur to them. They've all got the vote, so they all pretty much assume that the government they've voted in more or less approximates the government they want."
"You mean they actually vote for the lizards."
"Oh yes," said Ford with a shrug, "of course."
"But," said Arthur, going for the big one again, "why?"
"Because if they didn't vote for a lizard, then the wrong lizard might get in."
 
Posts: 3608 | Location: Two blocks from the Center of the Universe | Registered: December 30, 2004Reply With QuoteReport This Post
bigger government
= smaller citizen
Picture of Veeper
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This is the video I watched when they dropped one in near me. I can't believe how little traffic there seems to be over there now, even during rush hour.





“The urge to save humanity is almost always only a false-face for the urge to rule it.”—H.L. Mencken
 
Posts: 9185 | Location: West Michigan | Registered: April 20, 2006Reply With QuoteReport This Post
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Without further driving instruction a poor idea. Driving in Jamaica was hard enough.
 
Posts: 17701 | Location: Stuck at home | Registered: January 02, 2015Reply With QuoteReport This Post
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This type of interchange is good when it's a boulevard or, major thoroughfare crossing a freeway/highway. I wished CA had these, we're littered with diamonds and cloverleafs.

I've come to appreciate the roundabout, great in medium traffic'd areas and on-ramps but, they're horrible in high-traffic areas...see Paris' Champs-Elysees intersection.

This message has been edited. Last edited by: corsair,
 
Posts: 15191 | Location: Wine Country | Registered: September 20, 2000Reply With QuoteReport This Post
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No they are not, neither are guns.

People are.
They are the worst decision makers on this planet.





Safety, Situational Awareness and proficiency.



Neck Ties, Hats and ammo brass, Never ,ever touch'em w/o asking first
 
Posts: 55320 | Location: Henry County , Il | Registered: February 10, 2004Reply With QuoteReport This Post
Donate Blood,
Save a Life!
Picture of StarTraveler
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They’re introducing more and more of them around the Atlanta metro area. When in the right situation and properly signed with the right traffic signaling, they can be a very good thing and help traffic flow. If anyone ever makes a major mistake, though, they can be a nightmare since officers redirecting traffic into other lanes is more difficult than with traditional interchanges.

That said, my traffic is engineering professor was one of my favorite professors, but I’m so glad I went a different direction (pardon the pun).


***

"Aut viam inveniam aut faciam (I will either find a way or make one)." -- Hannibal Barca
 
Posts: 2195 | Location: Georgia | Registered: July 19, 2008Reply With QuoteReport This Post
Looking at life
thru a windshield
Picture of fischtown7
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you want to see something really fun, I have actually driven this one.



 
Posts: 3929 | Location: FL, GA,HB, and all points beyond | Registered: February 10, 2010Reply With QuoteReport This Post
The success of a solution usually depends upon your point of view
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They just finished putting one in here. We'll see how it works out over the long term but, we have had to put stop signs up at roundabouts because people can't figure out how to drive them, so I’m not sure we are a good case study.



“We truly live in a wondrous age of stupid.” - 83v45magna

"I think it's important that people understand free speech doesn't mean free from consequences societally or politically or culturally."
-Pranjit Kalita, founder and CIO of Birkoa Capital Management

 
Posts: 3947 | Location: Jacksonville, FL | Registered: September 10, 2010Reply With QuoteReport This Post
thin skin can't win
Picture of Georgeair
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My sister's neighborhood in Montgomery put in a "roundabout" which was really just a concrete island in middle of road at a 3-way intersection. Hilarity ensued. Long vehicles were marooned.....

Link to video


Image after they had shaved it back, before it was removed completely.




You only have integrity once. - imprezaguy02

 
Posts: 12888 | Location: Madison, MS | Registered: December 10, 2007Reply With QuoteReport This Post
Savor the limelight
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It's a Glock!
 
Posts: 11995 | Location: SWFL | Registered: October 10, 2007Reply With QuoteReport This Post
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quote:
Originally posted by Georgeair:
My sister's neighborhood in Montgomery put in a "roundabout" which was really just a concrete island in middle of road at a 3-way intersection. Hilarity ensued. Long vehicles were marooned.....

Ididic community advocates & politicos push to put those in without allocating the necessary capitol to build them properly. The middle-circle needs to be elevated so drivers can see it, enough space for longer vehicles to complete their turns which means all those corners need to be opened up and plenty of signs directing traffic flow. Looks like none of that was done, as somebody thought just throwing in a 10ft concrete lip in the middle of the intersection would be 'good enough' Roll Eyes
 
Posts: 15191 | Location: Wine Country | Registered: September 20, 2000Reply With QuoteReport This Post
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posted Hide Post
quote:
Originally posted by Georgeair:
My sister's neighborhood in Montgomery put in a "roundabout" which was really just a concrete island in middle of road at a 3-way intersection. Hilarity ensued. Long vehicles were marooned.....

Link to video

They did the same thing in Hastings MN. Replaced 3 intersections that had stop signs on the side streets with round-abouts without using any additional real-estate so now it's in essence a 4 way yield (the main road is VERY busy) and semis drive right over it since it's too small for them to navigate.



Image after they had shaved it back, before it was removed completely.





I reject your reality and substitute my own.
--Adam Savage, MythBusters
 
Posts: 1782 | Location: Red Wing, MN | Registered: January 04, 2005Reply With QuoteReport This Post
Get my pies
outta the oven!

Picture of PASig
posted Hide Post
quote:
Originally posted by Georgeair:

My sister's neighborhood in Montgomery put in a "roundabout" which was really just a concrete island in middle of road at a 3-way intersection. Hilarity ensued.



Wow. That was really dumb, they needed to make that 3-4 times larger than that for it to work but there’s no room there.


 
Posts: 35154 | Location: Pennsylvania | Registered: November 12, 2007Reply With QuoteReport This Post
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We have several in SW Missouri. They are efficient but older people, especially, have a lot of trouble with them. When you’ve been used to seeing oncoming traffic on the left and now they’re on the right it gets your attention!
 
Posts: 39 | Location: SW Missouri | Registered: March 26, 2009Reply With QuoteReport This Post
I Am The Walrus
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Year ago they built one in El Paso where Spur 601 and Loop 375 are. Worked out pretty well, I’d say. I’m a fan of them. Might take a few times to get used to.

Instead of dumbing things down, how about we make a driver license more difficult to get with actual tests? Driving is seen as a right instead of a privilege. Penalties for driving without a license or with a suspended license should be severe.


_____________

 
Posts: 13356 | Registered: March 12, 2005Reply With QuoteReport This Post
Prepared for the Worst, Providing the Best
Picture of 92fstech
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quote:
Originally posted by 2000Z-71:
I think a lot of it is the timing of the traffic signals at the entry and exit. We've got one here in Anchorage that seems to flow fairly well. Typically if you have to stop at the signal at the entry it is timed so that there's typically a green light at the exit. There's one in Phoenix close to my old house that does not flow well at all. it replaced an interchange that had round a bouts at the entry and exit. Lights are not timed at all. Wait for a light change at the entrance only to get stopped again at the exit.


We went through that one in Anchorage the other day (up by Costco?) and I was cussing it the whole time. I got stopped by every light, and it was an absolute PITA. This is in no way better than a basic 4-way traffic light (and I HATE lights) or even a roundabout setup. Switching directions is counterintuitive, and there are too many lights involved. It's overcomplicated and nonsensical. We have one on the North side of Ft. Wayne and I hate that one too.
 
Posts: 9560 | Location: In the Cornfields | Registered: May 25, 2006Reply With QuoteReport This Post
Thank you
Very little
Picture of HRK
posted Hide Post
quote:
Originally posted by 92fstech:
quote:
Originally posted by 2000Z-71:
I think a lot of it is the timing of the traffic signals at the entry and exit. We've got one here in Anchorage that seems to flow fairly well. Typically if you have to stop at the signal at the entry it is timed so that there's typically a green light at the exit. There's one in Phoenix close to my old house that does not flow well at all. it replaced an interchange that had round a bouts at the entry and exit. Lights are not timed at all. Wait for a light change at the entrance only to get stopped again at the exit.


We went through that one in Anchorage the other day (up by Costco?) and I was cussing it the whole time. I got stopped by every light, and it was an absolute PITA. This is in no way better than a basic 4-way traffic light (and I HATE lights) or even a roundabout setup. Switching directions is counterintuitive, and there are too many lights involved. It's overcomplicated and nonsensical. We have one on the North side of Ft. Wayne and I hate that one too.


The solution to the light problem would be to eliminate traffic lights in the system.

By elevating one path/direction over the other you'd never need to stop on the bridge for anyone. So where the two paths converge, one would go under, the other over and bob's your uncle, no lights to stop traffic.

Then again, the traffic guys will put a light 100yds past the end of the bridge, just to mess with everyone...
 
Posts: 24664 | Location: Gunshine State | Registered: November 07, 2008Reply With QuoteReport This Post
My other Sig
is a Steyr.
Picture of .38supersig
posted Hide Post
quote:
Originally posted by PASig:
You should see them on the ever-increasing traffic circles sprouting up here everywhere...

It could be worse: Years ago they replaced a few intersections with traffic circles in Athens, Ga. but the dumb shits still have the stop signs up. Confused



 
Posts: 9534 | Location: Somewhere looking for ammo that nobody has at a place I haven't been to for a pistol I couldn't live without... | Registered: December 02, 2014Reply With QuoteReport This Post
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