United States Department of Transportation
i
Case Studies to Develop a Highway-Rail Grade Crossing Analysis Framework Using Microsimulation
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2023-06-01
[PDF-12.80 MB]
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Edition:August 2021 – November 2022
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Abstract:There are approximately 126,700 highway-rail at-grade crossings in the U.S. A portion of those involve high-volume public streets where crossing events result in measurable traffic backups and delays to the extent that mitigation efforts are needed. Conventional traffic analysis methods such as those in the Highway Capacity Manual are limited in their ability to quantify the impacts of traffic interruptions due to a train crossing. Microscopic traffic simulation methods are capable of analyzing these events and simulation software has been a part of the practitioner’s toolbox now for 30 years. However, there has been no technical guidance nor consistency on how these tools should be applied to evaluate crossing events. Using microscopic simulation, researchers performed two case studies from which a framework has been developed that can be used by practitioners and decision makers for performing traffic operations analyses of at-grade crossings. The framework offers guidance for a consistent approach to the development and application of such models.
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