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内航貨物輸送における参入規制の影響分析

Author

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  • 細江 宣裕

    (National Graduate Institute for Policy Studies)

Abstract

内航海運業界は、戦後数十年の長きにわたって、船腹量の自主規制を通じて保護されてきた。1998年に開始された暫定措置事業は、新規に貨物船を建造する事業者に対して船価の4割近い建造納付金を課すという、きわめて強い参入規制となっている。本研究では、内航貨物輸送サービス部門の部分均衡モデルを構築し、この暫定措置事業がどれだけ運賃を引き上げてサービスの需給量を減少させ、最終的にどれだけ経済厚生に悪影響を与えているのかを検証する。その結果、仮に建造納付金を1%引き下げれば、運賃が約1.2%低下し、輸送量が約1.9%増加、経済厚生が約0.9億円改善されることがわかった。

Suggested Citation

  • 細江 宣裕, 2008. "内航貨物輸送における参入規制の影響分析," GRIPS Discussion Papers 08-12, National Graduate Institute for Policy Studies.
    • Handle: RePEc:ngi:dpaper:08-12
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    Keywords

    内航海運、参入規制、暫定措置事業;

    JEL classification:

    • L92 - Industrial Organization - - Industry Studies: Transportation and Utilities - - - Railroads and Other Surface Transportation
    • D45 - Microeconomics - - Market Structure, Pricing, and Design - - - Rationing; Licensing
    • R48 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - Transportation Economics - - - Government Pricing and Policy

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