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Old 10-11-2014, 02:07 PM
 
Location: Lafayette, La
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Lafayette has a bunch already. The city plans to have around 60 of them.
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Old 10-11-2014, 02:28 PM
 
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We have about ten or so here in town, four of them are on a road I use many times daily. I can say they have definitely improved traffic flow over the old four way stops. Before, during times of heavy traffic flow, it would take ten minutes to go a mile or two on this road. Now with the roundabouts it takes about five. I like them and have had no trouble using them although I have seen people enter them the wrong way.
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Old 10-11-2014, 02:44 PM
 
Location: Las Vegas
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I have never understood why they work so well in the UK and so poorly in the US.
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Old 10-11-2014, 03:16 PM
 
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Here's a pretty good example comparing a 4-way stop to a roundabout.

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Old 10-11-2014, 06:32 PM
 
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Quote:
Originally Posted by yellowsnow View Post
I have never understood why they work so well in the UK and so poorly in the US.
Because they drive on the left the Coriolis effect slows the angular momentum of the vehicles in the roundabout making it easier to react to cars entering. In the U.S. we drive on the right and so our roundabout's work in the opposite direction. When combined with the Coriolis effect this accentuates the angular velocity which reduces the ability to react to cars in and entering the roundabout reducing the effectiveness of the roundabout

Or it may just be that American drivers are more aggressive than British drivers
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