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January 29, 2011 / Omar J. Peters

More Roundabouts in Cities

Late last year, the NYT reported on the growing amount of roundabouts in the US.

All told, there are about 2,000 roundabouts in this country, most built in the last decade, according to Edward Myers, a senior principal at Kittelson & Associates, a transportation engineering and planning firm.

Numerous studies have also found that replacing lights and stop signs with roundabouts can reduce harmful emissions by more than 30 percent because there is less starting and stopping.

The article forgot to include another important stat on roundabouts: A 2001 Institute study of 23 intersections in the United States reported that converting intersections from traffic signals or stop signs to roundabouts reduced injury crashes by 80 percent and all crashes by 40 percent.



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  1. RastaPasta / Jan 30 2011 12:02 am

    Roundabouts are pretty populare here as well, there is a new one being built at the Placencia junction

  2. Scott Workman / Jan 30 2011 1:16 pm

    They really get people to look at what they are doing. Instead of just following instructions (stop, yield, etc.), you get to actively become part of traffic, look at others and interact in a way that just being locked in the car doesn’t always produce. Despite some people’s aversion to them, I think they do some good. We had a great example of one in Lawrence, KS that did a fantastic job of keeping the flow and slowing things down.,-95.232756&layer=c&sll=38.949811,-95.232400&cbp=13,279.72,,0,4.58&cbll=38.950034,-95.232419&gl=us&sspn=0.005749,0.013937&ie=UTF8&ll=38.949898,-95.232303&spn=0.005749,0.013937&z=17&iwloc=A&panoid=JZKJH8Gaui1iwc5CRpko-Q

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