A Study on Vehicle Noise Emission Modelling: Correlation with Air Pollutant Emissions, Impact of Kinematic Variables and Critical Hotspots
This work proposes a methodology suitable for analysing the sound power levels (Lw), and carbon dioxide (CO₂) and nitrogen oxides (NOₓ) emissions along a travel, and consequentially assessing the related critical hotspots. The estimation of noise and pollutant emissions from six vehicles driven along three different routes (one National Road and two highways) was conducted, in combined way, through seven Noise Emissions Models (NEMs) and Vehicle Specific Power (VSP) methodology, respectively. The inputs required by the models (namely, vehicle speed and acceleration and road grade) were extrapolated from On-Board Diagnostic system and GPS data recorded during monitoring campaigns. The specificities of each model were analysed, and the role played by the kinematic variables in noise and exhaust emissions assessment was highlighted. Results show that all the tested NEMs estimated higher noise levels on the highways, while VSP predicted higher emissions on the National Road. This happens because speed is the main input variable in NEMs, while acceleration has an impact on noise estimation in the low-speed range (below 50 km/h). For pollutant emissions evaluation, acceleration plays a fundamental role also at high-speed range, where a transition from a cruising condition to an acceleration phase leads to significant variations in terms of VSP values. Lw values, estimated with NEMs that use acceleration correction terms, present positive moderate-to-high correlation with VSP ones. Moreover, the models that neglect acceleration in noise estimation fail to recognize traffic control treatments as critical hotspots.
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Availability:
- Find a library where document is available. Order URL: http://worldcat.org/issn/00489697
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Supplemental Notes:
- © 2021 Elsevier B.V. All rights reserved. Abstract reprinted with permission of Elsevier.
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Authors:
- Pascale, A
- Fernandes, P
- Guarnaccia, C
- Coelho, M C
- Publication Date: 2021-9-15
Language
- English
Media Info
- Media Type: Web
- Features: Appendices; Figures; References; Tables;
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Serial:
- Science of the Total Environment
- Volume: 787
- Issue Number: 0
- Publisher: Elsevier
- ISSN: 0048-9697
- Serial URL: http://www.sciencedirect.com/science/journal/00489697
Subject/Index Terms
- TRT Terms: Acceleration (Mechanics); Acoustic emission; Carbon dioxide; Exhaust gases; Intersections; Mathematical models; Nitrogen oxides; Sound transmission; Traffic noise
- Subject Areas: Environment; Highways; Operations and Traffic Management; Vehicles and Equipment;
Filing Info
- Accession Number: 01774882
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 24 2021 4:40PM