AR6, WGIII, Chapter 10:
Mitigation in the Transport
SectorPaulina Jaramillo
Professor of Engineering and Public Policy at CMU
CLA for Chapter 101

Disclaimer• I am not an official representative of the IPCC.
• I am solely responsible for the material in this presentation,
though all the information comes from publicly availableresources.
• I am solely responsible for any opinions included in thispresentation. My views do not represent the official views ofCarnegie Mellon University or the IPCC.

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The transportation sector accounts for 15% of global
greenhouse gas emissions.

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“Demand-side options and low-GHG emissions technologies
can reduce transport sector emissions in developed countries
and limit emissions growth in developing countries (highconfidence).”

Direct CO2 emissions in 2030, 2050, and 2100 indexed to 2020 modeled year.
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“Demand-focused interventions can reduce demand for
all transport services and support the shift to moreenergy efficient transport modes (medium confidence).”

Behavioral change: Avoid demand for transport
services; Shift to more-efficient modes

Systemic change: Changes in urban form;
Investments in transit and active transport
infrastructure; Changes in economic structures;
Teleworking; Dematerialization of the economy;
Supply chain management; e-commerce; Smartmobility; Shared mobility; Vehicle automation.
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“Electric vehicles
powered by lowemissions
electricity offer thelargest
decarbonization
potential for landbased transport,
on a life cycle
basis (highconfidence).”6EV technology is at a high technology readiness, costs
are decreasing, and concerns are increasingly
addressable

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“Sustainable biofuels, low-emissions hydrogen, andderivatives (including synthetic fuels) can support
mitigation of CO2 emissions from […] and heavy-duty
land transport but require production process
improvements and cost reductions (medium confidence).”“Sourced sustainably and with lowGHG emissions feedstocks, biobased fuels, blended or unblended
with fossil fuels, can provide
mitigation benefits, particularly in the
short and medium term (mediumconfidence).”8“Low-GHG emissions hydrogen andhydrogen derivatives, including
synthetic fuels, can offer mitigation
potential in some contexts and landbased transport segments (mediumconfidence).”

“While efficiency improvements […] can provide somemitigation potential, additional CO2 emissions mitigation
technologies for aviation and shipping will be required (highconfidence).”9Will the transport sector reach net zero CO2 emissions?

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“Many mitigation strategies in the transport sector would
have various co-benefits […] ((high confidence).”11

Citation for Chapter 10• Jaramillo, P., S. Kahn Ribeiro, P. Newman, S. Dhar, O.E. Diemuodeke, T.
Kajino, D.S. Lee, S.B. Nugroho, X. Ou, A. Hammer Strømman, J.
Whitehead, 2022: Transport. In IPCC, 2022: Climate Change 2022:
Mitigation of Climate Change. Contribution of Working Group III to theSixth Assessment Report of the Intergovernmental Panel on Climate
Change [P.R. Shukla, J. Skea, R. Slade, A. Al Khourdajie, R. van Diemen,
D. McCollum, M. Pathak, S. Some, P. Vyas, R. Fradera, M. Belkacemi, A.
Hasija, G. Lisboa, S. Luz, J. Malley, (eds.)]. Cambridge University Press,Cambridge, UK and New York, NY, USA. doi:
10.1017/9781009157926.012• Many of the figures in this presentation came from a forthcoming factsheet
the IPCC has prepared for the WGIII report.
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