| Summary: | 碩士 === 國立暨南國際大學 === 土木工程學系 === 95 === The highway’s level of service is an important index for assessing the efficiency of the highway. Conventional assessment of the highway’s level of service was based on traffic flow conditions (such as density and average speed) without considering the effects of users’ perception. This study addresses on investigating the highway’s level of service by incorporating users’ perception on highway environment. Two questionnaires were designed to collect the drivers’ preferences on different scenarios. The ordered probit model was used to model the perception of drivers on highway’s level of service. The mixed logit model was further used to investigate drivers’ route choice behavior while simultaneously considering drivers’ perception of highway’s level of service. The estimation results indicate that several factors significantly affect users’ perception of highway’s level of service and route choice behavior, which include gender, trip purpose, average speed, quality of pavement, number of traffic signals and truck percentage of highway. Moreover, sensitivity analysis shows that raising the toll fee will switch a large portion of drivers to toll-free highways. The result of this study can provide guidelines for transportation planners and drivers in decision making, and further mitigate traffic congestions.
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