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Old November 7th, 2011, 10:43 PM   #561
friedrichstrasse
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Quote:
Originally Posted by italystf
In Italy the first roundabout was built in Lecco only in 1989, 30 years afrer our first motorways, complex interchanges and rest areas!


In Milan the first roundabouts were projected in 1912 city plan (example: piazzale Piola)
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Old November 7th, 2011, 10:55 PM   #562
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It was a roundabout or a traffic circle ?
The first roundabout in France opened in 1984, now France with over 30,000 is the country with the most.
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Last edited by Minato ku; November 7th, 2011 at 11:16 PM.
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Old November 7th, 2011, 11:01 PM   #563
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Yes, of course a traffic circle, as the Place de l'Etoile posted before...

Anyway, modern roundabouts exist in my homecity (Lodi, Lombardy) since the first 1970s, so many years before 1989...
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Old November 8th, 2011, 12:15 AM   #564
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Quote:
Originally Posted by Minato ku View Post
There is no roundabout inside Paris city limits, as there is no Stop sign.
If you don't see any traffic light, the priority to the right rule apply.
Really? If a local dead end street meet an important boulevard must traffic on boulevard stop to give priority?
In Italy the priority to the right rule is virtually non-existent. Every intersections, except maybe some between 2 dirt roads in the countryside, has stop or yield signs.

Quote:
Originally Posted by friedrichstrasse View Post
Yes, of course a traffic circle, as the Place de l'Etoile posted before...

Anyway, modern roundabouts exist in my homecity (Lodi, Lombardy) since the first 1970s, so many years before 1989...
Are you sure they weren't traffic circles that were later reconverted in roundabouts?
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Old November 8th, 2011, 12:21 AM   #565
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Yes! Now I understand what you mean: are "roundabouts" only the ones with free circle priority?

So it could be, I remember of such roundabouts since about 1993...

BTW, in Milan you can still find some old roundabouts with priority on the right, example piazza Aspari!
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Old November 8th, 2011, 01:42 AM   #566
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Quote:
Originally Posted by italystf View Post
Really? If a local dead end street meet an important boulevard must traffic on boulevard stop to give priority?
Even the Peripherique beltway has the priority to the right, it means that the cars coming inside this freeway have the priority over the cars already running on it.
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Old November 18th, 2011, 04:47 PM   #567
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The roundbouts in brazil are very wrong, see

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Old November 18th, 2011, 05:35 PM   #568
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In England we have had them for a long time. I'm not sure when the first one was but I know several where built in the 1920s-30s particularly around the London suburbs...Our motorway network has too many lol

The is the awful junction between M60 & M62, one of the busiest interchanges in the country but due to it being a roundabout its one of the worst as all the traffic that is changing direction has to share the name roads...


Sheffield's 'Hole in the road' aka Castle Square it was as a good idea in the 1960s but has since been filled in and all the roads around it downgraded...


Birmingham's Inner Ring Road, this side of it has now been removed...
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Old November 25th, 2011, 08:39 PM   #569
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Old November 25th, 2011, 08:51 PM   #570
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In the UK the term 'traffic circle' isn't used
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Old November 25th, 2011, 10:13 PM   #571
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i like roundabouts, they are so much better than traffic lights because, in traffic light you have to stop at least 2 min, in roundabout the traffic is fluid

the only problem y when the street is of 3 lanes and the roundabouts is of 2 lanes, its so dangerous

and they are so much cheaper than built "bridges"

examples here of my country


El Salvador
San Salvador´s beltway
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Old February 3rd, 2012, 08:20 PM   #572
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There are actually quite a few modern roundabouts that have been constructed in America since 1990. All 50 stats have at least 1 modern roundabout constructed. According to RoundaboutsUSA website there are over 2,600 modern roundabouts operating in the USA, not including the many small neighborhood traffic calming circles or the large 'monster-size' rotaries encountered in the northeastern states.

Here's a short video showing the evolution of modern roundabouts in America:


Link to download the google KMZ file shown in this video:
http://www.mediafire.com/?oooty22otn862r7

Here's an excel file of the roundabout database used to create the KMZ file:
http://www.mediafire.com/?e3qplbpd51yfdo7

Last edited by tradephoric; November 14th, 2012 at 05:51 AM.
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Old February 5th, 2012, 12:16 AM   #573
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Quote:
Originally Posted by xrtn2 View Post
The roundbouts in brazil are very wrong, see

That's a rotary, which has different rules than a roundabout/traffic circle. In a rotary, you give way to traffic ENTERING the circle. In a roundabout/traffic circle, you give way to traffic already in it.
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Old February 5th, 2012, 01:01 AM   #574
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Quote:
Originally Posted by Fargo Wolf View Post
That's a rotary, which has different rules than a roundabout/traffic circle. In a rotary, you give way to traffic ENTERING the circle. In a roundabout/traffic circle, you give way to traffic already in it.
In British English there's no difference, everything is a roundabout it its round and you drive in a circle

Edit: I realised that I've said this twice in one page
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Old February 5th, 2012, 08:07 PM   #575
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Here's an example of how heavy pedestrian traffic can create gridlock inside of the roundabout. This is a partial 3-lane roundabout constructed next to a high school in Kitchener, Ontario Canada.


For probably 30 minutes out of the day (15 minutes during school let in, and 15 minutes during school let out) the roundabout loses its effectiveness. Here's another video about this particular roundabout dealing with pedestrian safety:

Last edited by tradephoric; November 14th, 2012 at 05:53 AM.
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Old February 5th, 2012, 08:29 PM   #576
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Roundabouts are not an efficient way to control traffic in big cities. They should be eliminated.
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Old February 5th, 2012, 08:40 PM   #577
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That's a very general comment, my friend... There's actually some roundabouts on or near the City of Miami (Downtown) and they are very good at distributing traffic... another example is the roundobout at the gate to Coral Gables, which works wonders...

Tu comentario es demasiado general... pues hay lugares urbanos en los que si funcionan!
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Old February 5th, 2012, 08:56 PM   #578
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Quote:
Originally Posted by tradephoric View Post
Here's an example of how heavy pedestrian traffic can create gridlock inside of the roundabout. This is a partial 3-lane roundabout constructed next to a high school in Kitchener, Ontario Canada.
It's next to a school, they should have thought about that and build a tunnel for bikes and pedestrians. I've never seen such a big roundabout without pedestrian and biketunnels overhere especially not near a school...

Problem solved.
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Old February 5th, 2012, 09:29 PM   #579
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Quote:
Originally Posted by joshsam View Post
It's next to a school, they should have thought about that and build a tunnel for bikes and pedestrians. I've never seen such a big roundabout without pedestrian and biketunnels overhere especially not near a school...

Problem solved.
Really?!
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Old February 5th, 2012, 09:42 PM   #580
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A small one yes when it's a 1+1 road, not a 3 lane roundabout with heavy traffic connecting 2+2 roads no. Never seen that overhere, they always have tunnels.

Few examples in my area: (and all these roads are smaller than the one in the vid above and are not near a school)

http://g.co/maps/z7488
http://g.co/maps/frkgk
http://g.co/maps/6fhsv

Building a new roundabout with pedestrian tunnel:

http://g.co/maps/txgka
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