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Old June 6th, 2009, 01:22 PM   #101
scotdaliney
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Originally Posted by H123Laci View Post
its safer and more efficient than a 2lane roundabout...
(you have to choose the right lane BEFORE entering the roundabout, so you need no lane change IN the roundabout...)

but this 2+2 lane turbo seems to be stupid...

that volume recquires (and justifies the cost of) grade separation...
Thats my point though. Most modern double lane roundabouts don't have any lane changes inside the roundabout either. I can maybe see the point for 3 lanes and more to force correct lane changes for the third lane.
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Old June 6th, 2009, 05:38 PM   #102
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and unofficially?
Oval. There are no roundabout signs when entering it and you don't have to give way either.
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Old June 6th, 2009, 08:11 PM   #103
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Does that have traffic lights on it? Seems a very inefficient roundabout this particular one.
I very often drive this roundabout near Pijnacker (there's only one yet of this particular type), and I have to say traffic moves quite fluently here. Yes, there are traffic lights, but waiting times are usually very short.

But this is more like a super-turbo-roundabout. The normal ones (which are more common) look like this:

[img]http://i1.************/xm8k1w.jpg[/img]
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Old June 7th, 2009, 12:03 AM   #104
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Wow, those turbo roundabouts look confusing, especially from the perspective of a driver. There would need to be excellent signage to guide motorists through it.
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Old June 7th, 2009, 03:53 AM   #105
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They may look confusing from above but in reality they are quite logical; Keep right for a right turn, left for a left turn etc, like a normal junction. On the roundabout itself the directions are separated from each other. The road will smoothly guide you through if you've chosen the right lane before entering.
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Old June 7th, 2009, 04:29 AM   #106
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Some other dutch non-standard roundabouts i can think of:

This one in the Netherlands, near Amersfoort. A roundabout with a 'ringroad':



One of the few roundabouts in NL on which you have to give right of way: Keizer Karelplein in Nijmegen, a nightmare for learner drivers:



The Kleinpolderplein junction in Rotterdam's ringroad is built over, under and around a roundabout:
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Old June 7th, 2009, 01:14 PM   #107
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I very often drive this roundabout near Pijnacker (there's only one yet of this particular type), and I have to say traffic moves quite fluently here. Yes, there are traffic lights, but waiting times are usually very short.

But this is more like a super-turbo-roundabout. The normal ones (which are more common) look like this:

[img]http://i1.************/xm8k1w.jpg[/img]
Looks like that truck just cut of the car behind it. Typical truckies
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Old June 7th, 2009, 01:25 PM   #108
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As a truck driver, you sometimes need to take priority, otherwise you're stuck somewhere for a long time, and traffic is backing up behind you.
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Old June 7th, 2009, 01:53 PM   #109
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A notorious Zagreb roundabout, called Rotor.

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Old June 7th, 2009, 02:13 PM   #110
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As a truck driver, you sometimes need to take priority, otherwise you're stuck somewhere for a long time, and traffic is backing up behind you.
crap, there is never a good excuse to do that. Safety is more important than your run times. People that put other peoples safety behind there profit should be taken of the road.
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Old June 7th, 2009, 02:19 PM   #111
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I suggest you go on a drive with a city distribution truck driver. I bet you'll think otherwise then.
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Old June 7th, 2009, 03:06 PM   #112
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That is the only drawback of roundabouts...you cant give away your priority for example to buses in heavy traffic. I always give way to the public transport buses.
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Old June 7th, 2009, 03:14 PM   #113
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I never give way to buses unless I am required by law. They'll get enough priority at traffic lights (short distance radio) creating enough additional congestion as it is.
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Old June 7th, 2009, 04:23 PM   #114
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Are there any roundabouts in the USA?
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Old June 7th, 2009, 04:30 PM   #115
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Certainly there are some, not many of them though. More prevalent are traffic circles I think, especially in bigger cities.
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Old June 7th, 2009, 04:56 PM   #116
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Quote:
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A notorious Zagreb roundabout, called Rotor.

http://img5.imageshack.us/img5/3739/rotorzagreb.jpg
uf, it looks so calm and peaceful on photo. but in reality, it is totaly opposite hords of women who tried to avoid it, but incidentaly couldn't do ti , hunters to those women who are hunting them just to swear them, ppl from villages who see roundabout for the first time in their life (2 sorts of them: a) scared-to-death ones b) coolers who break the rules and don't give a **** for that) etc. etc.
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Old June 7th, 2009, 04:58 PM   #117
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I suggest you go on a drive with a city distribution truck driver. I bet you'll think otherwise then.
I do drive trucks - EWP's. Quite often. Are you honestly saying that cutting people of at roundabouts is ok.
Anyway enough on that.

Howabout the dogboneabout
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Old June 7th, 2009, 05:03 PM   #118
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Are you honestly saying that cutting people of at roundabouts is ok.
No, I said it's okay to be a little more "creative" as a truck driver. I've seen 10 km long queues on the Joure Roundabout in NL because trucks couldn't enter the roundabout because of the traffic.

This one always gives problems, because most traffic from the right (east) goes south, taking the roundabout 3/4ths. That means they are at some speed, and traffic from the left (west) cannot enter without a speedy acceleration, which is impossible for trucks.
[IMG]http://i40.************/11scbrl.jpg[/IMG]
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Old June 7th, 2009, 05:03 PM   #119
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uf, it looks so calm and peaceful on photo. but in reality, it is totaly opposite hords of women who tried to avoid it, but incidentaly couldn't do ti , hunters to those women who are hunting them just to swear them, ppl from villages who see roundabout for the first time in their life (2 sorts of them: a) scared-to-death ones b) coolers who break the rules and don't give a **** for that) etc. etc.
Whats so special about it,apart from the integrated right-turning lane? I dont see anytihing special about it...or there are no yield signs at the entrances?
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Old June 7th, 2009, 05:18 PM   #120
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Whats so special about it,apart from the integrated right-turning lane? I dont see anytihing special about it...or there are no yield signs at the entrances?
it is considered as one of those places in Zagreb where you can easy make accident (fortunately, minor, you hardly can kill somebody there because of speed). i think that the main thing which makes a problem is that half people think they can freely circulate in outer tracks, and other half thinks that outer tracks are only for exiting so they can make exit from medium track, too. as it is not regulated with horizontal neither vertical signalization which option is true, shit often happens.
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