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Using Entropy Weight Method to Assess Transit Satisfaction: A Focus on Older Adults
Yang Linchuan, Guo Yuanyuan, Liu Jixiang
Abstract Population aging is happening in many places, such as on the Chinese mainland and in Hong Kong. Hong Kong, with the second-highest percentage of older adults in Asia, is among the world’s fastest-aging societies. Moreover, the city has very high transit patronage: transit trips constitute approximately 90% of all trips. Given the significance of transit in Hong Kong, improving transit services for older adults is of substantial importance. In light of this, based on the data of transit satisfaction (or perception) collected by a questionnaire survey in March 2015 (N=613), this study adopts the entropy weight method to determine the importance weights of an array of transit service quality attributes (e.g., seat availability and travel stability). Then, it performs an index-based importance-satisfaction (I-S) analysis using the outcome of the previous step as a basis to determine priorities for transit service improvement. The results show that in the view of older adults, three service quality attributes in need of improvement are seat availability, waiting conditions, and service frequency. Accordingly, the paper puts forward policy implications for further implementation.
Keywords older adult; entropy weight method; importance-satisfaction analysis; mobility; transit satisfaction

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