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Multimodal Transport Networks

Author

Listed:
  • Fuchs, Simon
  • Wong, Woan Foong

Abstract

Over half of distance-weighted U.S. freight is shipped using more than one transport mode. We examine how multimodal transport networks shape the economic and environmental impacts of infrastructure investments and disruptions. We develop a tractable spatial equilibrium model of multimodal routing with mode-specific congestion at intermodal terminals. We estimate a modal substitution elasticity using road and rail data, and a terminal congestion elasticity using vessel-positioning data. Calibrated to the U.S. freight network, the model identifies key bottlenecks and quantifies $.46-$1.85 billion in real GDP gains from intermodal terminal improvements, with additional environmental benefits from shifting away from carbon-intensive road transport. Ignoring mode-specific congestion overstates welfare gains from highway improvements by 85%, while ignoring multimodal flexibility understates them by 22%. Losing rail network access is estimated to reduce real GDP by $230 billion.

Suggested Citation

  • Fuchs, Simon & Wong, Woan Foong, 2024. "Multimodal Transport Networks," CEPR Discussion Papers 19531, C.E.P.R. Discussion Papers.
    • Handle: RePEc:cpr:ceprdp:19531
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    File URL: https://cepr.org/publications/DP19531
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    JEL classification:

    • F11 - International Economics - - Trade - - - Neoclassical Models of Trade
    • R12 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General Regional Economics - - - Size and Spatial Distributions of Regional Economic Activity; Interregional Trade (economic geography)
    • R42 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Transportation Economics - - - Government and Private Investment Analysis; Road Maintenance; Transportation Planning

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