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Search Frictions and Efficiency in Decentralized Transport Markets

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  • Giulia Brancaccio
  • Myrto Kalouptsidi
  • Theodore Papageorgiou
  • Nicola Rosaia

Abstract

We explore efficiency and optimal policy in decentralized transport markets, such as taxis, trucks, and bulk shipping. We show that in these markets, search frictions distort the transportation network and the dynamic allocation of carriers over space. We derive explicit and intuitive conditions for efficiency and show how they translate into efficient pricing rules, or optimal taxes and subsidies for the planner who cannot set prices directly. The results imply that destination-based pricing is essential to attain efficiency. Then, using data from dry bulk shipping, we demonstrate that search frictions lead to a sizable social loss and substantial misallocation of ships over space. Optimal policy can eliminate about half of the welfare loss. Can a centralizing platform, often arising as a market-based solution to search frictions, do better? Interestingly, the answer is no; although the platform eradicates frictions, it exerts market power, thus eroding the welfare gains. Finally, we use two recent interventions in the industry (China’s Belt and Road Initiative and the environmental initiative IMO 2020) to demonstrate that taking into account the efficiency properties of transport markets is germane to any proposed policy.

Suggested Citation

  • Giulia Brancaccio & Myrto Kalouptsidi & Theodore Papageorgiou & Nicola Rosaia, 2023. "Search Frictions and Efficiency in Decentralized Transport Markets," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 138(4), pages 2451-2503.
    • Handle: RePEc:oup:qjecon:v:138:y:2023:i:4:p:2451-2503.
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    File URL: http://hdl.handle.net/10.1093/qje/qjad023
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    Cited by:

    1. Boffa, Federico & Fedele, Alessandro & Iozzi, Alberto, 2023. "Congestion and incentives in the age of driverless fleets," Journal of Urban Economics, Elsevier, vol. 137(C).
    2. Suguru Otani, 2024. "Nonparametric Estimation of Matching Efficiency and Mismatch in Labor Markets via Public Employment Security Offices in Japan, 1972-2024," Papers 2407.20931, arXiv.org, revised Sep 2024.

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