Vehicle Emissions at Modern Roundabouts and Signalized Intersections


Quantitatively Determining the Emissions Reduction Benefits of the Replacement of a Signalized Intersection by a Roundabout  (16 page pdf, Maxine Hesch, Academy of the Holy Names, New York State Dept of Transportation, March 2007)

Also discussed here: Impact of Modern Roundabouts on Vehicular Emissions  (10 page pdf, Srinivas Mandavilli,  Eugene R. Russell, Margaret J. Rys,  Proceedings of the 2003 Mid-Continent Transportation Research Symposium, Ames, Iowa, August 2003)

Today we review two studies that examine the impact of modern roundabouts on reducing vehicle emissions compared to an intersection with traffic lights. Results indicate reduced Carbon Dioxide, Carbon Monoxide and Nitrogen Oxide emissions of about 26% with up to 50-60% reductions at peak traffic flow times.

To see Key Quotes and Links to key reports about this post, click  HERE

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