Underlying Mechanisms of Transit-Oriented Development: A Conceptual System Dynamics Model in Qatar
Abstract
Transit-Oriented Development (TOD) is an urban planning approach that facilitates the achievement of sustainable development goals from an urban planning and transportation perspective. Developed countries are moving rapidly to integrate TOD principles into the urban fabric. On the other hand, developing countries face challenges in attempting to implement TOD and introduce new transportation modes. The present research study analyzes the concept of TOD from a systematic perspective, providing an in-depth analysis of the interrelation of the three subsystems of TOD: sustainable transportation, built environment, and socio-economic development. The authors posit that the appropriate application of TOD requires not only that one evaluate the existing conditions of the urban fabric, but also that one assess the typical causality characteristics of the TOD index, as well as investigate the dynamicity of these interacting factors as they change over time. This approach should allow policymakers to better understand the interrelations among the built environment, transportation, and socio-economic aspects of TOD, ultimately enabling them to provide appropriate and focused policies. In this research study, a conceptual system dynamics model for TOD is developed, taking into consideration the needs of a sustainable built environment, a sustainable transportation system, and a sustainable economy. The main findings therefore relate causality effects among multiple variables, including transportation, urban and socio-economic subsystems. The model developed in this study was developed in the State of Qatar, a small country in the Arabian Gulf, but has broader implications as it could be implemented in other countries with conditions similar to those prevailing in Qatar.
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