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Re: Is the British roundabout conquering the US? Posted by Larry West [Email] (#1140) [Profile/Gallery] (more from Larry West) on Fri, 1 Jul 2011 10:07:29
In Reply to: Is the British roundabout conquering the US?, JohnA [Profile/Gallery] , Fri, 1 Jul 2011 08:41:43 Members do not see ads below this line. - Help Keep This Site Online - Signup
"Roundabouts" CAN be a lot safer and more efficient. The key is in how drivers navigate them. Massachusetts was, and still is, a place where the "rotary" thrives. When setup and signed properly, they work very well. New Jersey, on the other hand, has all but eliminated "circles" across the state. NJ's problem was that instead of educating drivers and posting proper signs, they kept drawing the wrong lines, and stopping the wrong traffic on them, until they became almost un-navigable. It didn't help that it was extremely rare that they were actually round. Many of them were merely a wide bit in the road, and all right of way was given to the major road, so if you had to cross the major road, or worse, make a left, the tie-ups could grow to epic proportions.
Little Maine towns are putting them in, and they're even making a comeback on a small scale in NJ.
Some of the best I've seen have been in Sweden. Almost perfectly circular, the signage is also excellent (something US DOTs could learn a LOT from...). My favorite implementation was a roundabout as a highway exit device. The highway got one on ramp and one off ramp in each direction. These ramps led to an elevated roundabout where the minor road crossed. The traffic flow was very easy and one wondered, why they are not all like that, instead of the often suicidal "cloverleaf" exit in the US, where you've got accelerating and decelerating traffic trying to occupy the same space...
Erik Carlsson has one named after him in TrollhÃ¤ttan. It's just north of the museum, and signed "Erik Carlsson's Rondell"...
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