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Modeling the Influence of Roundabout Deflection on Its Efficiency as a Noise Abatement Measure

Author

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  • Saša Ahac

    (Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia)

  • Maja Ahac

    (Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia)

  • Josipa Domitrović

    (Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia)

  • Vesna Dragčević

    (Faculty of Civil Engineering, University of Zagreb, 10000 Zagreb, Croatia)

Abstract

Challenges that emerge in roundabout design are mostly related to space constrictions and provision of appropriate deflection around the central island. This can result in speed profiles on roundabouts that might reduce their potential as a noise abatement measure. Because of this, the impact of a roundabout on noise levels and its applicability as a traffic calming device and a noise abatement measure should be investigated in the early design stage, by modeling noise levels. In this paper, the following hypothesis is tested: vehicle movement trajectories, defined during the fastest path performance check in roundabout early design phase, can be used as the road traffic noise sources when modeling noise at roundabouts using static noise model. This procedure (1) simplifies the preparation of the noise model, (2) results in a model that is closer to the real-world in terms of traffic flow conditions, (3) allows the noise calculations in the early stages of roundabout design, and (4) includes the influence of roundabout deflection on calculated noise levels. The abovementioned simplifications of the road traffic noise modeling process should encourage the optimization of roundabout geometry in terms of its noise reduction capabilities in the preliminary design phase of these intersections.

Suggested Citation

  • Saša Ahac & Maja Ahac & Josipa Domitrović & Vesna Dragčević, 2021. "Modeling the Influence of Roundabout Deflection on Its Efficiency as a Noise Abatement Measure," Sustainability, MDPI, vol. 13(10), pages 1-14, May.
    • Handle: RePEc:gam:jsusta:v:13:y:2021:i:10:p:5407-:d:553175
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    References listed on IDEAS

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    1. Marco Guerrieri & Ferdinando Corriere & Gianfranco Rizzo & Barbara Lo Casto & Gianluca Scaccianoce, 2015. "Improving the Sustainability of Transportation: Environmental and Functional Benefits of Right Turn By-Pass Lanes at Roundabouts," Sustainability, MDPI, vol. 7(5), pages 1-19, May.
    2. Slavko Davidović & Vuk Bogdanović & Nemanja Garunović & Zoran Papić & Dragan Pamučar, 2021. "Research on Speeds at Roundabouts for the Needs of Sustainable Traffic Management," Sustainability, MDPI, vol. 13(1), pages 1-20, January.
    3. Joanna Oleśków-Szłapka & Irena Pawłyszyn & Joanna Przybylska, 2020. "Sustainable Urban Mobility in Poznan and Oslo-Actual State and Development Perspectives," Sustainability, MDPI, vol. 12(16), pages 1-38, August.
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    Cited by:

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    2. Tien-Pen Hsu & Ku-Lin Wen & Taiyi Zhang, 2021. "Applying Machine Learning to Develop Lane Control Principles for Mixed Traffic," Sustainability, MDPI, vol. 13(14), pages 1-11, July.

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