| Summary: | 碩士 === 朝陽科技大學 === 環境工程與管理系碩士班 === 98 === In recent years, transportation systems in Taiwan have grown more convenient; however, in cities with high population density and limited land, the roads are constructed close to the residential buildings, and the residents tend to complain about road noise. As the public is increasingly demanding regarding better quality of life and environmental consciousness, the tranquility of residential environments grows in importance. However, transportation is equally important. Therefore, how to achieve a win-win situation, namely, reducing road noise, is an important topic. This study applied the Analysis Hierarchy Process (AHP) theory to investigate the opinions of experts, scholars, city/county environmental bureaus, drivers, and the public regarding the importance of decreased road noise. It further analyzed the data to identify a consistent view, and reported the findings as a reference for government to assess the decrease of road noise. Based on literature review, this study reorganized the related factors, and designed a questionnaire based on a Likert 5-point scale. The data were analyzed with average mean and standard deviations. The “hierarchical framework of assessment on decreased road noise” was constructed based on 16 items, with means of over 4, and an AHP relative weight questionnaire was designed. After collecting the questionnaires, consistency testing was conducted to select the valid samples in order to control the reliability of the results. Upon pairwise comparison of the AHP, this study acquired the relative importance weights, and constructed a weighted system to serve as reference for related organizations. Analytical results of this study are shown below:
1. At the level of ”assessment factors”, the experts suggest the most critical factors are: “construction” (0.336), “regulation and system” (0.329), “technique” (0.077), “environment and education” (0.180), and “government should actively maintain road repairs” (0.155).
2. At the level of “regulation and system”, the experts suggest that the most critical criteria are: “carrying out current regulations by administrative measures” (0.303), “enhancing the repair efficiency after public reports” (0.252), “precisely planning criteria for implementing policies” (0.211), “planning of the ban against heavy-duty vehicles on some roads” (0.127), and “enhancing the ban on re-equipped automobiles and motorcycles” (0.108).
3. At the level of “environment and education”, the experts suggest that the most critical criteria are: “government should pay attention to road noise” (0.321), “education of good driving habits” (0.224), “encouraging driving manners and avoiding horn blowing” (0.169), “to pay attention to the impact of road noise on the environment” (0.146), and “actively developing better pavement with low noise” (0.135).
4. At the level of “construction”, the experts suggest that the most critical criteria are: “precisely planning noise prevention on newly constructed roads” (0.365), “planning the construction of acoustic walls on the paths of noise transmission” (0.309), “government should actively maintain road repairs” (0.243), and “maintain a proper distance between the roads and buildings” (0.085).
5. At the level of “technique”, the experts suggest that the most critical criteria, in order, are: “precisely planning noise prevention on newly constructed roads” (0.365), “planning the construction of acoustic walls on the paths of noise transmission” (0.309), “government should actively maintain road repairs” (0.243), and “maintain proper distance between the roads and buildings” (0.085).
6. The top five criteria of overall weights are in the order, as below: “carrying out current regulations by administrative measures” (0.174), “government should pay attention to road noises” (0.171), “reinforcing construction quality of roads; the pavement should be even and precisely pressed” (0.077), “education of good driving habits” (0.076), and “government should actively maintain road repairs” (0.073).
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