Abstract
The growing number of studies on road network pricing requires adoption of systematic methodologies to assess research outcomes and provide an unbiased summary of research findings and lessons learned. This paper aims to identify and analyse primary studies related to a set of research questions on road network pricing that primarily address the effectiveness of road network pricing as a travel demand management strategy. The paper achieves this by consolidating the fragmented evidence on the topic and identifying the role of transport pricing in steering our post-pandemic cities on a path of sustainable urban mobility. The paper uses a reliable and auditable systematic approach to examine past and current research trends, resulting in a rational assessment of the role and impacts of road network pricing as a travel demand management strategy. The paper achieves this by performing a bibliometric citation analysis that identifies 105 articles of valuable research contributions that represent fundamental knowledge in the development of research covering the period between 2007 and 2020. Importantly, the review identifies four main research themes in the literature, namely implementation impacts, innovations in technology, acceptability, and modelling methodologies for determining impacts, that are core elements of the research effort on the travel demand management and sustainability aspects of road pricing. Inductive reasoning is then used to address emerging issues, applications, and the effects of road network pricing in reducing congestion and enhancing urban centre environmental quality. The paper concludes with a discussion of policy directions for overcoming barriers to the implementation of road network pricing as an effective strategy for addressing modern-day urban mobility challenges such as rising urban populations, emissions, and pollution particularly amid and post COVID-19. Finally, the paper provides a roadmap of future research opportunities that can heighten the role of road network pricing in shaping the directions of sustainable urban transport policies and strategies.
Highlights
The goal of this systematic review is to identify and analyse primary studies related to a set of research questions on road network pricing that need to be addressed to meet the research objectives, which primarily address the effectiveness of road network pricing as a travel demand management strategy
The systematic literature review (SLR) methodology adopted in this work includes identifying, evaluating, interpreting, and describing the existing body of knowledge about road network pricing with emphasis on its effectiveness as a travel demand management strategy
This paper provided a rigorous systematic review of empirical evidence on road network pricing and its effectiveness as a travel demand management strategy
Summary
The goals of pricing can include the requirements for facility preservation and management of life-cycle costs; managing the demand for travel; improving safety and reducing adverse environmental impacts; and supporting economic development and productivity through provision of reliable transportation infrastructure. Travel demand management includes a number of strategies for reducing the demand for travel [2,3,4,5], shifting private vehicle use to more sustainable modes of transport [6], and improving the efficiency of existing infrastructure to reduce reliance on building additional road capacity [7,8]. The systematic literature review (SLR) framework considered in this paper follows evidence-based practices adopted by other disciplines such as medicine, economics, psychology, and health care [13] It enables the amalgamation of knowledge in a transparent and auditable methodology and provides a basis for a comprehensive analysis of literature. Influential contributions that pioneered research on the subject over time are described and addressed using evidence from a condensed corpus of 105 papers published in peer reviewed quality journals for the period 2007–2020
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