A Comparative Analysis of Innovative Interchanges: Single Point Interchange, Displaced Left-Turn Interchange, and Diverging Diamond Interchange
Publication: International Conference on Transportation and Development 2022
ABSTRACT
Innovative interchange designs have been considered as an effective solution for increasing traffic demand all over the United States. However, innovative interchange designs have only gained interests from transportation management agencies in the last couple of decades, and therefore research related to innovative interchanges are scarce compared to that of intersections and other transportation assets. To examine the effectiveness and weaknesses of innovative interchanges, this study compares the operations of traditional diamond interchange with three innovative interchanges: single point interchange, diverging diamond interchange, and displaced left-turn interchange. Under the same traffic condition and similar design capacity, results indicate that innovative interchanges outperform traditional diamond interchange in all scenarios when comparing their level of service. Furthermore, the single point interchange provides outstanding operational performance compared to other interchanges. Results also show a considerable advantage of the single point interchange, which is the ability to provide balanced delays among the approaches of the interchange.
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International Conference on Transportation and Development 2022
Pages: 85 - 96
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Published online: Aug 31, 2022
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