| Summary: | 碩士 === 國立臺灣海洋大學 === 運輸科學系 === 99 === The Ministry of Transportation and Communications (MOTC) have been conducting a serial projects to improve hazardous roadway locations since 1980. A standard operating procedure has been developed and applied to thousands of hazardous locations over the past decades. Since a large amount of money has been spent on these projects, it is essential to investigate the effectiveness of these investment.
This study evaluated the effectiveness of those hazardous locations that investigated in the 22nd project of hazardous roadway improvement. A total of 115 hazardous locations were analyzed by the applications of DEA and Malmquist Productivity Index. In this study, the input variables are the expected deviations of accident frequencies and serious index and the output variables are the actual deviations of accident frequencies and serious index. This study applied the Sequential Malmquist Productivity Index to the inspection of technical changes and technical effectiveness changes among these 115 hazardous locations. This study found the greatest decrease in effectiveness occurred in the fourth year after the project implemented. The study results demonstrated that the technical changes were no longer advanced in the fourth year after implementation as well. The analyzed results of this study indicated that the locations with high serious indexes, with investment costs over 1 million NT dollars, enforced by local transportation agencies and police contributed to less improvement effects. The locations mitigated with traffic engineering treatments, with raised medians, through lanes, and signals were associated with greater improvement effects.
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