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Modified Reliability Theory for Speed-Based Evaluation of Successive Geometric Elements
Publisher: ASCE
Abstract: The current study proposes a modified reliability theory and methodology for the speed-based evaluation of successive geometric elements such as a long tangent followed by a curve. A formulation based on lower limit and ...
Diverging Diamond Interchange Analysis: Planning Tool
Publisher: American Society of Civil Engineers
Abstract: Many traffic simulation software tools have emerged over the last decade and are widely used for analyzing capacity, delay, and level of service at intersections, ramps, and along arterial/freeway segments. Although these ...
Modeling 85th Percentile Speed Using Spatially Evaluated Free-Flow Vehicles for Consistency-Based Geometric Design
Publisher: ASCE
Abstract: This paper investigates the free-flow condition suitable for four-lane divided highways and proposes spatial free-flow speed–based operating speed prediction models. The 85th percentile speed (V85) of spatially evaluated ...