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Old 10-15-2015, 06:18 PM   #101
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I didn't create the definitions, they are not personal.
The FHWA, the Transportation Research Board, and Institute of Transportation Engineers are the governing/advisory groups for roadway design and modern roundabouts are as distinct a subset of circular roadways as roses are a subset of flowers.

The FHWA has a video about modern roundabouts on Youtube.

MUTCD graphics Chapter 3C - MUTCD 2009 Edition - FHWA
A movie. Who knew?
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Old 10-15-2015, 06:23 PM   #102
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It is my impression that the majority of the people who have posted on this thread understood the initial post to refer to rotaries, circles and roundabouts interchangeably and have commented in light of that understanding. You want to narrow the definition to exclude the ones that don't conform to your own preferences. The 'No True Scotsman' fallacy comes to mind.
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Old 10-15-2015, 06:23 PM   #103
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Everything you wanted to know about roundabouts is here.....
Hey, be careful, you're getting close to the edge.
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Old 10-15-2015, 07:46 PM   #104
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Had to be a traffic circle or rotary, not a modern roundabout.
If any of the entry lanes has a stop sign, itís not a modern roundabout.
If you could play a game of football in the center landscaped area, itís not a modern roundabout.
If the circular roadway has a stop sign, yield sign or signal, itís not a modern roundabout.
If you donít have to slow down to enter it, itís not a modern roundabout.
If you have to change lanes in the circular roadway to exit, itís not a modern roundabout.
If you can easily drive faster than 20 mph in the circular roadway, itís not a modern roundabout.
If it has a park for pedestrians, or a building, in the middle, itís not a modern roundabout.
Now that we have the definition of "modern roundabout", and know that there are technical definitions of all this stuff we know what you mean.

That said the term "modern roundabout" was introduced in this thread pretty late in the game (yesterday) BY YOU and prior to that only roundabout, circle, rotary, etc were used. So it's pretty clear that you are the only one referring to "modern roundabouts".

I understand this is your professional specialty. And you like modern roundabouts as a solution. But you have to understand that you are talking to lay people. We misuse terms, but amazingly, most of us understood each other.

It's ok for people to vent about a pet peeve. It's ok for you to disagree with them, and educate them. But unless they state "modern roundabout" - assume they are talking about the more common forms of circular intersections. Especially since "modern roundabouts" are fairly rare here in the USA.
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Old 10-15-2015, 08:15 PM   #105
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I actually like roundabouts, got sent to South Africa, had to learn to drive the other way round. Lots of roundabouts, a Brit taught me how, pretty easy when everyone knows how to use them. Part of the problem in the states is many folks don't know how to navigate.
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Old 10-15-2015, 08:15 PM   #106
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Roundabouts are great provided at least these three things are true:
- rules for the roundabouts are consistent
- drivers understand the rules of how to drive in roundabouts
- drivers can actually follow the rules and laws of driving.


Imagine trying to navigate the above roundabout in the US
It was fun my first time.
What the heck! That's insane!
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Old 10-15-2015, 09:29 PM   #107
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By far the scariest most insane roundabout I've ever been on is the Arc de Triomphe circle!
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Old 10-15-2015, 09:44 PM   #108
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The scariest traffic I've been in was Mumbai, fortunately I wasn't doing the driving. They don't need no stinking roundabouts.

https://m.youtube.com/watch?autoplay=1&v=x0t39ONiB
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Old 10-15-2015, 10:16 PM   #109
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By far the scariest most insane roundabout I've ever been on is the Arc de Triomphe circle!
I remember that roundabout being scary even back in 1954!

Well, I was only 6, but my parents were scared by the crazy drivers and fender benders, and I figured that if they were scared, I probably should be too.
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Old 10-16-2015, 09:45 AM   #110
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This is the most entertaining thing I've ever read about roundabouts. Sculptures of giant snails, gazing into mirrors. Awesome!

When Driving in France, Watch Out for Giant Snails - WSJ
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Old 10-16-2015, 10:15 AM   #111
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Great article, where we also learn about the Roundabout Appreciation Society.
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Old 10-16-2015, 11:32 AM   #112
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This is the most entertaining thing I've ever read about roundabouts. Sculptures of giant snails, gazing into mirrors. Awesome!

When Driving in France, Watch Out for Giant Snails - WSJ
Awesome!
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Old 10-16-2015, 12:16 PM   #113
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Awesome!
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Old 10-16-2015, 04:56 PM   #114
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Great article, where we also learn about the Roundabout Appreciation Society.
Those folks need professional help....
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Old 10-16-2015, 05:02 PM   #115
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Those folks need professional help....
+1

Glancing over Brau's link - the President of the Roundabout Society is titled "Lord of the Rings".
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Old 10-16-2015, 05:08 PM   #116
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And, yes, there's a song for everything:
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Old 10-16-2015, 05:53 PM   #117
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And, yes, there's a song for everything:
But that song came before the "modern roundabout"
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Old 10-16-2015, 07:39 PM   #118
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The scariest traffic I've been in was Mumbai, fortunately I wasn't doing the driving. They don't need no stinking roundabouts.

https://m.youtube.com/watch?autoplay=1&v=x0t39ONiB

That's amazing. It looks scary to me because I don't understand the informal rules they are using. This is the problem in many areas of the world. You don't know the local rules until you've driven the local roads for a while.
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Old 10-16-2015, 08:12 PM   #119
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Let's hope nobody makes a mistake in Boston at a poorly marked rotary (or possibly a traffic circle).

Cop caught on dash cam threatening to ‚Äėblow a hole‚Äô through driver‚Äôs head - Massachusetts news - Boston.com

"A Medford [MA] police detective has been placed on administrative leave after he was caught on video threatening to “blow a hole through your f---ing head” while pulling over a driver who drove the wrong way at a traffic circle."
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Old 10-16-2015, 09:40 PM   #120
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The core issue is that most US drivers don't know how to deal with a roundabout/traffic circles short of the little ones used as traffic calmers in residential areas (FYI" expert", yes they may only calm traffic for 100 feet on either direction but Portland's residential blocks are often 400 feet long where those circles have been constructed - hard to gain much acceleration). Traffic experts need to ask their Motor Vehicle folks to tell drivers what to do.

In Portland Metro we have a lot of traffic experts who don't consider the human factor when they do what they do. Drivers are getting frustrated as we deal with cyclist lanes and strange turning markers ... let alone traffic circles. What looks good on paper doesn't translate to those of us behind the wheel. Theory shmerry....
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