Environmental impact of modern roundabouts

Mandavilli, Srinivas; Rys, Margaret J.; Russell, E R

doi:10.1016/j.ergon.2006.11.003

Cited by 75 publications

(36 citation statements)

References 3 publications

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“…Technical literature on design and building roundabouts from a vehicular traffic point of view is more or less comprehensive both for the European and for the overseas scenario (FHWA 2000;NCHRP 2007;Pochowski and Myers 2010;Abdel-Aty and Hosny 1997;Taekratok 2000;Queensland Government 2002;Austroads 1993;CETUR 1988;CERTU 1998;CERTU 1999;SETRA 1997;Pompidor and Fain 2004;Züst 2003). Some authors (Mandavilli et al 2008)) have already pointed out the potential role of roundabout in reducing atmospheric pollution produced by vehicles, others (Daniels et al 2011) studied safety concerns for different types of road users. Other problems arise with roundabout insertion in urban and rural environments.…”

Section: Introductionmentioning

confidence: 99%

Landscape and Environmental Impact Evaluation of Roundabouts

2015

IJAEC

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Abstract:The interest of researchers and practitioners on roundabout solutions has been growing increasingly in the last decades. The often large areas occupied by this type of intersections require special attention on the use of ground and the preservation of the natural, environmental and architectural heritage. This aim also presents the opportunity for evaluating their impact on the landscape and environment. The paper proposes a new method developed for roundabout evaluation (but generalizable to other infrastructures and fields) borrowed from building technology and based on the needs, requirements and performance expected from an object rather than on prescriptions for and descriptions of its dimensions and quality. Applications on two roundabouts are presented in order to highlight practical developments. Their final evaluation sheets are presented and through them it is relatively easy to single out the problems and drawbacks of the roundabouts from the landscape point of view.

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Section: Introductionmentioning

confidence: 99%

Landscape and Environmental Impact Evaluation of Roundabouts

2015

IJAEC

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“…Mandavilli et al [9] used the aaSIDRA 2.0 software to analyze emissions at six intersections where roundabouts had replaced two-way or four-way stop control. They found a statistically significant decrease in CO, CO 2 , NO , and HC emissions as a result of roundabout installation.…”

Section: Literature Reviewmentioning

confidence: 99%

Before-and-After Field Investigation of the Effects on Pollutant Emissions of Replacing a Signal-Controlled Road Intersection with a Roundabout

Meneguzzer

Gastaldi

Giancristofaro

2018

Journal of Advanced Transportation

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The purpose of this study is to assess the effects on air pollution that may derive from replacing a signal-controlled intersection with a roundabout, using a before-and-after approach. Based on field data collected with a test car instrumented with a Portable Emission Measurement System, the two intersection configurations were compared in terms of emissions of CO 2 , CO, and NO . The existence of significant differences in emissions between the two types of control was assessed by means of a statistical technique known as two-sample biaspect permutation test. In addition, focusing on trips carried out in peak traffic conditions, binary logistic regression models were developed to identify the factors that significantly affect vehicular emissions and to quantify their effect. The findings of our analyses show that emissions of CO 2 and CO are generally lower for the roundabout than for the signal-controlled intersection, while an opposite result arises for NO emissions. As far as other influential factors are concerned, trip direction (reflecting site-specific conditions) and driver behavior have a considerable impact on the emissions of all three pollutants.

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“…Several studies conducted have concluded that implementing roundabouts as intersection control have reduced all traffic crashes by 40%, and injury crashes by 80% [1] [2]. Further, studies conducted have proved that roundabouts are comfortable to be traversed for trucks, and access to businesses has not Journal of Transportation Technologies impacted much with the presence of roundabouts [3] [4] [5].…”

Section: Introduction and Study Objectivementioning

confidence: 99%

Trucks at Roundabouts: A Synthesis Study

Chevuri¹

2018

JTTs

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Roundabouts in United States and other countries have been proved to be very successful, effective, and a safe traffic control treatment. Roundabouts in the context of regularly expected truck configuration have also been successful for effective roundabout designs; however, there are always some site specific issues for trucks accommodation at roundabouts. Therefore, there is a great need for an informational guide in the form of synthesis report for roundabout designs specific to unique trucking traffic activity. While there are not significant literatures and studies in this subject, there are few studies/reports spread out which address various issues in this subject area. This study attempts to synthesize the research and knowledge of truck accommodation at roundabouts by synthesizing various research studies, reports, and articles; various subject areas such as roundabout designs for trucking activity, roundabout designs and accommodation strategies for specialized trucking activity such as oversized trucks, truck safety at roundabouts, and motor carrier perspective of trucking at roundabouts have been analyzed and relevant knowledge has been synthesized. This synthesis can be useful o researchers, designers, planners, and decision makers to determine effective ways to address specific trucking related issues at a roundabout.

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Environmental impact of modern roundabouts

Cited by 75 publications

References 3 publications

Landscape and Environmental Impact Evaluation of Roundabouts

Landscape and Environmental Impact Evaluation of Roundabouts

Before-and-After Field Investigation of the Effects on Pollutant Emissions of Replacing a Signal-Controlled Road Intersection with a Roundabout

Trucks at Roundabouts: A Synthesis Study

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