Entropy-Based Diversity Quantification of Multimodal Transportation Systems: Physical Infrastructure Perspective versus Travel Behavior Perspective
Publication: Journal of Urban Planning and Development
Volume 148, Issue 3
Abstract
Multimodal transportation serves diverse needs and enhances the efficiency and fairness in travel. Despite the increased demands in multimodal transportation development, there lacks a comprehensive framework and associated quantitative methodology to assess the level of diversity of a multimodal transportation system. To this end, the objective of this study is to develop a comprehensive framework to assess the diversity of a multimodal transportation system from both physical infrastructure perspective and travel behavior perspective. From the physical infrastructure perspective, the functional richness and evenness of each transportation mode in an area are calculated and aggregated into one diversity measurement using the entropy weight method. From the travel behavior perspective, the diversity of travelers’ behaviors in an area is quantified based on the number of trips made by each mode using the entropy method. The proposed framework was implemented in a case study of the city of Hartford, CT. The physical infrastructure diversity and travel behavior diversity of multimodal transportation systems in six zip code areas of Hartford were calculated and compared. The case study results showed that the physical infrastructure diversity and travel behavior diversity revealed similar trends in most areas in the case study, with some exceptions which could potentially be explained by sociodemographic factors of different areas. The proposed framework could help transportation planners and decision-makers in obtaining a holistic understanding of the diversity level of a multimodal transportation system, considering urban planning strategies to enhance diversity in travel.
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Acknowledgments
This study was sponsored by USDOT Center for Advanced Multimodal Mobility Solutions and Education (CAMMSE). The opinions expressed in this paper represent those of the authors and not necessarily those of CAMMSE.
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Journal of Urban Planning and Development
Volume 148 • Issue 3 • September 2022
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© 2022 American Society of Civil Engineers.
History
Received: May 23, 2021
Accepted: Mar 2, 2022
Published online: May 6, 2022
Published in print: Sep 1, 2022
Discussion open until: Oct 6, 2022
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