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Old February 7th, 2012, 01:32 PM   #581
RKC
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Quote:
Originally Posted by agliati2005 View Post
Roundabouts are not an efficient way to control traffic in big cities. They should be eliminated.
that's just simply not true
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Old February 7th, 2012, 01:37 PM   #582
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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.
The problem is pedestrians just keep coming, they could have a person (like a lollipop lady) allowing bigger groups to cross at once so they won' hold up traffic forever - I can easily imagine highschool kids just wondering about talking etc. holding up half the town. I've experienced it before.
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Old February 7th, 2012, 04:33 PM   #583
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or be smart and build a pedestrian tunnel -.-
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Old February 11th, 2012, 04:59 PM   #584
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Quote:
Originally Posted by x-type View Post
cool phenomena on river Kupa in Karlovac

Quote:
Originally Posted by nenea_hartia View Post
Is that a water roundabout?
Oh yeaah
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Old February 13th, 2012, 01:40 PM   #585
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Quote:
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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
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Old February 13th, 2012, 08:27 PM   #586
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or be smart and build a pedestrian tunnel -.-
Tunnels are awful! Here in Sheffield, UK the big roundabouts on the Ring Road have tunnels under them and at night its awful! At least have bridges above the roads which are open. A lot of the city centre roundabouts just have surface crossings, but set a bit further down the road away from the roundabout to stop traffic get backed up when ever someone crosses...
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Old February 14th, 2012, 03:11 PM   #587
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Well, they need to be wide enough andhave decent lighting to prevent people feeling unsave. They are everywhere in Belgium to yet I rarely feel unsave in them. (see my post on previous page)
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Old February 14th, 2012, 03:32 PM   #588
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Well, they need to be wide enough andhave decent lighting to prevent people feeling unsave. They are everywhere in Belgium to yet I rarely feel unsave in them. (see my post on previous page)
I agree that they do need to be well lit, but in reality...they never are lol
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Old February 14th, 2012, 03:45 PM   #589
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The ones I know are. Bright tl lamps on both sides always...
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Old February 14th, 2012, 10:27 PM   #590
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The ones I know are. Bright tl lamps on both sides always...
Most of the ones built in the 60s-70s when the idea of it came about are awful. I'm sure better things could be done, but any tunnel in an urban area just for people is a bad idea. If you really wanna keep people off a road, I say use bridges...
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Old February 15th, 2012, 02:49 AM   #591
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Britain's pedestrian tunnels are almost always dark and dangerous.
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Old February 15th, 2012, 10:18 AM   #592
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I surely will prefer this:


instead of this:


or this:


or even this:


All examples above are from Bulgaria, last one is in Plovdiv, others are in Sofia. Not all pedestrian tunnels and underpasses look so bad, but still that is what happens to most of them in the time in the suburbs etc.

But not to be so offtopic, I there are only same-level pedestrian crossings on bulgarian roundabouts, no tunnels, no bridges. But still, they're also not build at places, where there so much pedestrian traffic.

Examples from Sofia:

Sofia's Ring Road's junction with road to Dragalevtsi - here

Roundabout at 4th km of Tsarigradsko Shaussee boulevard - here

Roundabout at Stochna Gara square (street-light regulated) - here

Roundabout at Nadezhda Overpass (no pedestrian crossings at all) - here

Small roundabout on the older road to Sofia Airport (no pedestrian walkways are drawn, although quite often there are pedestrians) - here

etc...

Last edited by Chilio; February 15th, 2012 at 10:40 AM.
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Old February 15th, 2012, 11:06 AM   #593
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The ones I know are. Bright tl lamps on both sides always...
We have a lot of pedestrian underpasses, subways etc. nowdays where possible they are making new zebra crossings, so people don't have to go underground all the time. In reality no one wants to go up and down lots of stairs to be in a dark, dirty underpass, where you can also get into trouble. It is an obsolate concept used when car traffic had priority in terms of town planning, traffic planning (that's why lots of tramlines and such were demolished all over Europr to make way for roads, etc.).

So in theory they might be the logical solution, in practice no one like's them who actually has to use them...

this is a typical inner city underpass/subway, with metro connection (Blaha Lujza Square). For a long time you had to come down here even if you didn't need the metro, only wanted to cross the street. There are now new zebra crossings overground, which were immediately used by large crowds of people, indicating that lot of the pedestrian traffic didn't need to go down to the subway at all (cars had to stop at the intersection anyway, so the new zebras don't even hold up traffic).

http://criticalmass.hu/files/alaulj.jpg

new zebras:

http://m.blog.hu/ep/epitos/image/zebra/zebra01.jpg
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Old February 15th, 2012, 11:30 AM   #594
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as you go out of town things get less pretty, lol.

Békásmegyer

http://img1.indafoto.hu/8/7/95807_42...23aee367_m.jpg


http://www.metropol.hu/images/2009/0..._aluljaro1.jpg

Örs Vezér Square

http://kep.index.hu/1/0/165/1654/165...ffa5a21_wm.jpg

Astoria I think:

http://terfigyelokamerarendszerek.hu...rarendszer.jpg

Nyugati Station

http://m.blog.hu/vi/vilagvaros/image/DSC03346-1.JPG


http://fmh.hu/image.aspx?id=8f44a51c...e-cbc038e76e5b

Erzsébet Királyné útja

http://www.hangfogo.hu/kepek/Budapes...ErKirAlGit.JPG

Petőfi híd

http://img9.indafoto.hu/3/9/28459_af...d376b224_m.jpg

Hungária körút

http://ideiglenes.files.wordpress.co...a-kesz-van.jpg
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Old February 15th, 2012, 11:35 AM   #595
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Tunnels tend to be unsafe, although a lot can be mitigated by a decent design. Many pedestrian tunnels fall into neglect, and lack of police enforcement also doesn't help. In the Netherlands we have gazillions of bicycle tunnels, and while they pose some problems here and there, it works great because the newer ones are very well designed. For instance a tunnel should preferrably not have curves, well-lit and wide, so you can always look through the entire thing before you enter it. We also have motorcycle cops who frequently patrol through these tunnels on their way.
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Old February 15th, 2012, 02:07 PM   #596
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Pedestrian tunnel are fine during daytime when roads are very busy and there are many people crossing them (so less chances to find yourself alone with dangerous people). During night should be closed to avoid crime risks and because lower traffic make easier crossing the road. However, also during daytime, tunnels should be monitored by cameras and police agents.
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Old February 15th, 2012, 05:29 PM   #597
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The longest I've walked in the one underneath the Schelde river in Antwerp. It's kinda busy at times and is 572 meters long.

Anyway all new roundabouts on busy roads in Belgium have pedestrain and bike tunnels. They look good, are wide and never made me feel unsave and look like this:

new: (2010)


old: 1995 (but got a cleanup)



Although I agree they are neglected many times, it's still better than the video posted where pedestrians keep up traffic.
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Last edited by joshsam; February 15th, 2012 at 05:41 PM.
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Old February 19th, 2012, 06:44 AM   #598
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A wide roundabout in Ankara with ~200m diameter: http://harita.yandex.com.tr/-/CJew70NB
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Last edited by Triple C; February 20th, 2012 at 06:20 AM.
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Old February 19th, 2012, 10:58 PM   #599
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Not radius but diameter... A radius is 1/2 of the diameter.
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Old February 24th, 2012, 09:19 PM   #600
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What's the average cost of a standard roundabout in your area?

This T-intersection will be replaced by a roundabout in the coming months. As you can see no additional right-of-way is necessary (no expropriation). The cost of this one-lane roundabout is € 406.000

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