Journal
NATURE SUSTAINABILITY
Volume 4, Issue 6, Pages 494-500Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41893-020-00678-z
Keywords
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Funding
- National Research Foundation, Prime Minister's Office, Singapore, under the CREATE programme
- Singapore-MIT Alliance for Research and Technology (SMART) Centre
- Future Urban Mobility Interdisciplinary Research Group
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The study found that the entrance of transportation network companies (TNCs) led to increased road congestion and a decline in transit ridership, but had an insignificant impact on private vehicle ownership. Despite the ideal of promoting large-scale car sharing to provide a sustainable mobility solution, TNCs have intensified urban transport challenges in the United States since their debut.
The role of transportation network companies (TNCs) in the urban transport system is under intense debate. In this study, we systematically assess three aspects of the net impacts of TNCs on urban mobility in the United States-road congestion, transit ridership and private vehicle ownership-and examine how these impacts have evolved over time. Based on a set of fixed-effect panel models estimated using metropolitan statistical area level data, we find that the entrance of TNCs led to increased road congestion in terms of both intensity (by 0.9%) and duration (by 4.5%), an 8.9% decline in transit ridership and an insignificant change in vehicle ownership. Despite the ideal of providing a sustainable mobility solution by promoting large-scale car sharing, our analysis suggests that TNCs have intensified urban transport challenges since their debut in the United States.
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