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Impacts of subsidy efficiency on bus electrification: A participatory system dynamic modeling

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  • Rodrigues, Alyson L.P.
  • Cipcigan, Liana
  • Potoglou, Dimitris
  • Dattero, Dominic
  • Wells, Peter
  • Regina da Cal Seixas, Sônia

Abstract

This study explores the effectiveness of government subsidies in promoting the adoption of Battery Electric Buses (BEBs) and mitigating CO2 emissions to illustrate how political and contextual factors interact in this implementation. Case studies from Wales and Brazil were chosen to demonstrate results in different national contexts and identify differences and similarities in electrification initiatives. The system dynamics (SD) models are established through group model building (GMB) involving interdisciplinary workshops conducted with local researchers from both countries. Causal Loop Diagrams (CLDs) were employed to describe the system in terms of causal connections and mutual influences. The simulated results reveals that the static subsidy efficiency in 2030 for Brazil and Wales correspond to 43 % and 64 %, respectively. The emissions avoided per BEBs unit corresponds to approximately 129.848 tons CO2/year and 109.310 tones CO2/year, respectively. The originality of this research results from the development of flexible models as a decision tool for the electrification of public transport. Therefore, the findings are useful to both researchers and policymakers involved in crafting action plans of bus transit.

Suggested Citation

  • Rodrigues, Alyson L.P. & Cipcigan, Liana & Potoglou, Dimitris & Dattero, Dominic & Wells, Peter & Regina da Cal Seixas, Sônia, 2025. "Impacts of subsidy efficiency on bus electrification: A participatory system dynamic modeling," Transport Policy, Elsevier, vol. 167(C), pages 210-221.
    • Handle: RePEc:eee:trapol:v:167:y:2025:i:c:p:210-221
    DOI: 10.1016/j.tranpol.2025.03.031
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