Transport Policy Studies' Review
Online ISSN : 2433-7366
Print ISSN : 1344-3348
Volume 12, Issue 4
Displaying 1-4 of 4 articles from this issue
Policy research paper
Academic research paper
  • Shinya HANAOKA, Taqsim HUSNAIN, Tomoya KAWASAKI, Pichet KUNADHAMRAKS
    2010 Volume 12 Issue 4 Pages 024-031
    Published: January 25, 2010
    Released on J-STAGE: May 31, 2019
    JOURNAL FREE ACCESS

    In Thailand, transport sector is the largest energy consuming sector (38%). Road haulage of freight transport accounts for approximately 92% of total domestic freight movements. Accordingly, it is one of the largest contributors to adverse environmental impacts. This study presents one option to reduce energy consumption through modal shift from trailer to intermodal transport involving railway and waterway. It focuses on freight movements between Bangkok and Hat Yai in Thailand. Energy savings are measured by multi-objective optimization model using decision variables consisting of three mode options: trailer only, intermodal-rail and intermodal-waterway. In addition to energy consumption, the objective function also includes time and charge of shipment factor.

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  • Takehiko TSUBOI, Tetsuro HYODO, Tetsuya WAKITA
    2010 Volume 12 Issue 4 Pages 032-041
    Published: January 25, 2010
    Released on J-STAGE: May 31, 2019
    JOURNAL FREE ACCESS

    The total volume of international air cargo from/to Japan has been decreasing after 2004. The purposes of this paper are to investigate the characteristics of recent air cargo by “Foreign Trade Statistics” and to develop modal split model between marine and air transport. We clarified that one of the decline’s reasons was based on the decreasing import goods. The developed modal split model calibrates logistics cost which involves time, cost, inventory cost and obsolescence cost. We applied the model to several international OD pairs, and it was verified that the model has sufficient applicability.

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