汽車貨物運輸業成本函數之研究

碩士 / 國立成功大學 / 交通管理學系 / 88 / The rapid growth of economy and an increase in highway investment in the past few decades have resulted in the significant development of motor carrier industry to become the dominant inland freight transportation mode in Taiwan. Unfortunately, the cost structures of both domestic highway motor carriers (TL) and regular route motor carriers (LTL) in Taiwan have never been carefully investigated. Therefore, this study aims to use the translog function form to construct cost functions for these carriers and to analyze their economic characteristics (ex. economies of density , elasticity of output, elasticity of input price, average cost and marginal cost). Via these economic characteristics, we can interpret the current situation of the TL and LTL markets, moreover, we can determine if regulated policies made for two carriers are suitable.
Empirical analyses were performed using the panel data of motor carriers in Taiwan from year 1991 to 1997. The major findings include: 1) The major factor causing significant differences in cost structure would be average length-of-haul, instead of total revenues or tonnage carries as in other countries; 2) TL industry has economies of density, while LTL industry has only weak economies of density; 3) Among factors of input, fuel price has the most significant influence on TL’s cost, while labor price on LTL’s; 4) Both LTL and TL have evidence of economies of load size and length-of-haul (but only short haul (<50 kilometers) TL has significant economies of length-of-haul); 5) The regulated rate of TL has been set above the equilibrium price from the analysis of their density economies, marginal cost and average cost. This has led to severe cut-price competition among TL carriers; 6) While LTL industry was subject to oligapoly and competitive market behavior it, has only weak economies of density. A price ceiling with considerable downward flexibility in fares policy can be used.

Identiferoai:union.ndltd.org:TW/088NCKU0119015
Date January 2000
CreatorsKai-shiang Hsu, 許凱翔
ContributorsS. Judy Wang Chiang, 王小娥
Source SetsNational Digital Library of Theses and Dissertations in Taiwan
Languagezh-TW
Detected LanguageEnglish
Type學位論文 ; thesis
Format91

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