Trends and Insights from Transportation Congestion Pricing Policy Research: A Bibliometric Analysis

Bhavna Singichetti, Adam Dodd, Jamie L. Conklin, Kristen Hassmiller Lich, Nasim S. Sabounchi and Rebecca B. Naumann
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Bhavna Singichetti: Injury Prevention Research Center, University of North Carolina at Chapel Hill, 725 Martin Luther King Jr. Blvd., CB #7505, Chapel Hill, NC 27599, USA
Adam Dodd: Health Sciences Library, University of North Carolina at Chapel Hill, 335 S. Columbia St., CB #7585, Chapel Hill, NC 27599, USA
Jamie L. Conklin: Health Sciences Library, University of North Carolina at Chapel Hill, 335 S. Columbia St., CB #7585, Chapel Hill, NC 27599, USA
Kristen Hassmiller Lich: Department of Health Policy and Management, University of North Carolina at Chapel Hill, 1105E McGavran-Greenberg Hall, CB #7411, Chapel Hill, NC 27599, USA
Nasim S. Sabounchi: Department of Health Policy and Management, Center for Systems and Community Design, City University New York, Graduate School of Public Health and Health Policy, 55 West 125th St., New York, NY 10027, USA
Rebecca B. Naumann: Injury Prevention Research Center, University of North Carolina at Chapel Hill, 725 Martin Luther King Jr. Blvd., CB #7505, Chapel Hill, NC 27599, USA

IJERPH, 2022, vol. 19, issue 12, 1-13

Abstract: Toll-based congestion pricing (CP) policies are increasingly implemented globally for alleviating road traffic congestion. Several interconnected factors affecting or induced by CP implementation include air quality/emissions, travel time, and road user safety. We sought to examine and characterize research output and patterns across several domains (e.g., health, policy acceptability) surrounding toll-based CP policies, in order to identify where research has focused and where gaps exist. We conducted a structured review and identified 2333 relevant publications, using semi-supervised and machine learning strategies combined with manual review. Annual publication counts peaked in 2015 (n = 122). Themes identified from title and abstract terms included policy implementation characteristics, advanced transportation modeling methods and approaches, and public perception and acceptability. Authorship networks indicated a lack of interdisciplinary research. Country analyses identified the US, China, and the UK as the most frequently represented countries, and underrepresentation from low-income countries. Findings indicate that research focused on specific road user types (e.g., pedestrians) and safety impacts, and equity considerations were relatively sparse compared to other topics (e.g., policy economics, public perception). Additional research on these critical topics is necessary to ensure that such policies are designed to promote positive and equitable effects on road user health and safety.

Keywords: congestion pricing; travel demand management; transportation policy; cordon pricing; zone pricing; traffic congestion; transportation systems (search for similar items in EconPapers)
JEL-codes: I I1 I3 Q Q5 (search for similar items in EconPapers)
Date: 2022
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