Are we getting vehicle emissions estimation right?

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dc.contributor.author Grabe, Ruan Johannes
dc.contributor.author Joubert, Johan W.
dc.date.accessioned 2022-12-06T13:23:17Z
dc.date.available 2022-12-06T13:23:17Z
dc.date.issued 2022-11
dc.description.abstract Simulation is a valuable prediction tool to evaluate the impact of climate change interventions prior to disruptive implementations that may yield unintended and unwanted consequences. Advances in agent-based simulation allow us to estimate the dynamic emissions produced by vehicles at a fine resolution, with each vehicle modelled individually. The scalability of these models allow decision-makers to evaluate large-scale scenarios. But how good are these models? In this paper, the authors apply a state-of-the-art emissions model in the Multi Agent Transport Simulation (MATSim) framework to simulate individual vehicle emissions. Simulation results are compared with real driving emissions tests, using a portable emissions measurement device on a light and heavy vehicle. Quantifying the gap between macro-level simulation and actual emissions, the paper contributes by showing that pollutants are significantly underestimated, especially for heavy vehicles. This confirms prior micro-scale studies and magnifies the detrimental impact of using uncorrected aggregated models to inform environmental policy affecting transport. en_US
dc.description.department Industrial and Systems Engineering en_US
dc.description.librarian hj2022 en_US
dc.description.sponsorship The UP as the primary contributor, the Department of Science and Innovation through their Waste RDI Roadmap and the National Research Foundation, South Africa. en_US
dc.description.uri http://www.elsevier.com/locate/trd en_US
dc.identifier.citation Grabe, R.J. & Joubert, J.W. 2022, 'Are we getting vehicle emissions estimation right?', Transportation Research Part D: Transport and Environment, vol. 112, art. 103477, pp. 1-13, doi : 10.1016/j.trd.2022.103477. en_US
dc.identifier.issn 1361-9209 (print)
dc.identifier.issn 1879-2340 (online)
dc.identifier.other 10.1016/j.trd.2022.103477
dc.identifier.uri https://repository.up.ac.za/handle/2263/88663
dc.language.iso en en_US
dc.publisher Elsevier en_US
dc.rights © 2022 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY license. en_US
dc.subject Agent-based simulation en_US
dc.subject Portable emissions measurement system (PEMS) en_US
dc.subject Real driving emissions (RDE) en_US
dc.title Are we getting vehicle emissions estimation right? en_US
dc.type Article en_US


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