ORCID Identifier(s)

0000-0003-2024-3280

Graduation Semester and Year

Summer 2025

Language

English

Document Type

Dissertation

Degree Name

Doctor of Philosophy in Civil Engineering

Department

Civil Engineering

First Advisor

Dr. Kate K. Hyun

Second Advisor

Dr. Stephen P. Mattingly

Third Advisor

Dr. Jinzhu Yu

Fourth Advisor

Dr. Shouyi Wang

Abstract

The rapid growth of online shopping during the COVID-19 pandemic has reshaped consumer behavior, yet many continue to rely on in-store visits. This dissertation presents a comprehensive analysis of shopping and entertainment travel patterns and their impacts on urban mobility. Leveraging machine learning models with two years of smartphone location data, this study identifies key factors influencing in-store shopping trips, including temperature, store accessibility, and online delivery trends. A novel pattern recognition framework classifies weekly shopping and entertainment activities, revealing significant sociodemographic variations in trip behaviors across different population groups. Furthermore, the research investigates the network-wide traffic effects of discretionary trips in the Puget Sound region, highlighting how grocery, mall, and restaurant visits contribute to congestion outside traditional commuting hours. These findings underscore the importance of incorporating dynamic travel behaviors and socio-economic characteristics into transportation planning. The integrated insights from these studies offer valuable guidance for policymakers and urban planners to develop equitable, data-driven strategies that address evolving consumer travel demands and improve urban traffic management.

Keywords

In-store shopping, activity patterns, machine learning, discretionary trips, socioeconomic factors.

Disciplines

Civil Engineering | Transportation Engineering

License

Creative Commons Attribution 4.0 International License
This work is licensed under a Creative Commons Attribution 4.0 International License.

Available for download on Saturday, August 07, 2027

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