United States Department of Transportation
i
Development of Performance Matrices for Evaluating Innovative Intersections and Interchanges [2015]
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2015-09-01
[PDF-1.81 MB]
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Abstract:Innovative intersections and interchanges, primarily Continuous Flow Intersection (CFI) and Diverging Diamond Interchange (DDI), have seen an increase in numbers in the State of Utah over the past several years, making Utah a leader in the country in implementation of these designs. Although on the surface these designs seem to improve traffic performance, their complete impacts and benefits are hard to assess. There are still no clearly defined guidelines and methodologies for monitoring and measuring performance of these designs from state DOTs manuals, AASHTO, HCM, NEMA and HSM. Innovative designs have impacts on operations, safety, accessibility, transit, pedestrian and nonmotorized traffic, land use, economic development, and environment. Due to this variety of impacts, there is a need to develop methodologies to further evaluate innovative intersection designs with regards to different performance measures. The primary objective of this research project is to develop a matrix of performance measures which stakeholders could apply in practice to effectively evaluate innovative intersection designs in terms of operations, safety, access, and multimodal accommodations.
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