Cited by 166transportation and logistics systemsEnergy, Environment, and Transportation PoliciesUrban and Freight Transport Logistics

Decarbonizing intraregional freight systems with a focus on modal shift

Open access
Kaack, Lynn H, Vaishnav, Parth, Morgan, M Granger, Azevedo, Inês L, Rai, Srijana·2018·Environmental Research Letters

Abstract

Road freight transportation accounts for around 7% of total world energy-related carbon dioxide emissions. With the appropriate incentives, energy savings and emissions reductions can be achieved by shifting freight to rail or water modes, both of which are far more efficient than road. We briefly introduce five general strategies for decarbonizing freight transportation, and then focus on the literature and data relevant to estimating the global decarbonization potential through modal shift. We compare freight activity (in tonne-km) by mode for every country where data are available. We also describe major intraregional freight corridors, their modal structure, and their infrastructure needs. We find that the current world road and rail modal split is around 60:40. Most countries are experiencing strong growth in road freight and a shift from rail to road. Rail intermodal transportation holds great potential for replacing carbon-intense and fast-growing road freight, but it is essential to have a targeted design of freight systems, particularly in developing countries. Modal shift can be promoted by policies targeting infrastructure investments and internalizing external costs of road freight, but we find that not many countries have such policies in place. We identify research needs for decarbonizing the freight transportation sector both through improvements in the efficiency of individual modes and through new physical and institutional infrastructure that can support modal shift.

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Crossref · 10.1088/1748-9326/aad56c

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168 of 169 references verified0 citation errors · 0 not checkable

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  • Consolidation enables shipments to use rail and water modes for part of the journey.

    “As rail and water modes require much larger loads than trucks, consolidation also enables shipments to use these modes for part of the journey [407].”

    From Tackling climate change with machine learning (2023) · cites this paper as [407]

  • AM can produce lighter parts in vehicles that reduce energy consumption.

    “AM (3-D printing) can produce lighter parts in vehicles, such as road vehicles and aircraft, that reduce energy consumption [341,407].”

    From Tackling climate change with machine learning (2023) · cites this paper as [407]

  • Additive manufacturing has limited potential to reduce freight transport by producing lighter goods and enabling production closer to the consumer.

    “For example, additive manufacturing (AM) or 3-D printing has (limited) potential to reduce freight transport by producing lighter goods and enabling production closer to the consumer [407].”

    From Tackling climate change with machine learning (2023) · cites this paper as [407]

  • Some high-GHG modes such as trucks can be cost-competitive in regions with lax enforcement because they can overload and not obey labor or safety rules.

    “Some modes with high GHG emissions, such as trucks, can be particularly cost-competitive in regions with lax enforcement of regulation, as they can benefit from overloading and not obeying labor or safety rules [407].”

    From Tackling climate change with machine learning (2023) · cites this paper as [407]

  • Intermodal transportation relies on low-carbon modes such as rail and water for part of the journey.

    “Such intermodal transportation relies on low-carbon modes such as rail and water for part of the journey [407].”

    From Tackling climate change with machine learning (2023) · cites this paper as [407]

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Research works printed but not linked: 5

  1. National Research Council et al 2014 Reducing the Fuel Consumption and Greenhouse Gas Emissions of Medium-and Heavy-duty Vehicles, Phase Two: First Report (Washington, DC: National Academies Press)
  2. National Academies of Sciences, Engineering, and Medicine 2016 Commercial Aircraft Propulsion and Energy Systems Research: Reducing Global Carbon Emissions (Washington, DC: National Academies Press)
  3. Verweij K 2011 Synchromodal transport: thinking in hybrid cooperative networks EVO's Logistics Yearbook Edition 2011 ed Rotterdam F H pp 75-88 (https://www.evofenedex.nl/sites/default/files/ 2018-01/YB%20EVO%202011.pdf)
  4. T R 1998 Policy Options for Intermodal Freight Transportation: Special Report 252 (Washington, DC: National Academies Press)
  5. 222OECD 2018 Real GDP forecast (indicator) (https://www.oecd-ilibrary.org/economics/real-gdp-forecast/ indicator/english_1f84150b-en) (Accessed: 13 February 2018)

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Authors
Kaack, L. H., Vaishnav, P., Morgan, M. G., Azevedo, I. L., & Rai, S.
Affiliations
Carnegie Mellon University (US)
Corresponding author
Kaack, Lynn H
Venue
Environmental Research Letters
Published
2018-08-15
Volume
13
Issue
8
Pages
083001
ISSN
1748-9326 (ISSN-L)
OpenAlex
W2884628636
Cited by
166
References
168
Citations by year
2026: 15 · 2025: 30 · 2024: 22 · 2023: 32 · 2022: 23 · 2021: 22 · 2020: 13 · 2019: 7 · 2018: 2
FWCI
13.58
Type
journal article
Language
en
Open access
Locations
  • Environmental Research Letters (publishedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion)
  • OPUS 4 (Zuse Institute Berlin) (submittedVersion)
Funders
National Science Foundation (SES- 0949710)
Topics
  • Social Sciences › Transportation › transportation and logistics systems
  • Physical Sciences › Energy › Renewable Energy, Sustainability and the Environment › Energy, Environment, and Transportation Policies
  • Physical Sciences › Engineering › Building and Construction › Urban and Freight Transport Logistics
Keywords
modal shift, road freight transport, rail freight, modal split, CO2 emissions, internalization of external costs, developing countries, transport policy

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