International Conference on Transportation and Development 2020
How Much Transportation Investment Is Needed for Expected Accessibility Enhancement Goal
Publication: International Conference on Transportation and Development 2020
ABSTRACT
Transportation network design decisions can significantly affect the accessibility of a group or area, and therefore their economic development. Although the accessibility maximization and the equity of accessibility given investment budget have already been explored, the amount of transportation investment needed for an expected accessibility enhancement goal has never been investigated. This paper aims to propose a method and an algorithm to help policy makers to make the minimum investment decisions for the expected goal. A novel bi-level model system is formulated in which the upper level model is to minimize investment cost with a constraint of expected accessibility enhancement goal, while the lower level model is a transportation system equilibrium that is a feedback process between trip distribution and traffic assignment. A heuristic algorithm, namely trial and error algorithm, is designed to solve the proposed model. An experimental study is conducted to demonstrate the effectiveness and operability of the proposed method and algorithm. The results show that they are useful tools for investment decision making on goal-oriented accessibility enhancement.
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Information & Authors
Information
Published In
International Conference on Transportation and Development 2020
Pages: 133 - 150
Editor: Guohui Zhang, Ph.D., University of Hawaii
ISBN (Online): 978-0-7844-8316-9
Copyright
© 2020 American Society of Civil Engineers.
History
Published online: Aug 31, 2020
Published in print: Aug 31, 2020
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