Minimizing user delay and crash potential through highway work zone planning.
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2014-05-01
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Abstract:Lane closures due to highway work zones introduce many challenges to ensuring smooth traffic operations and a ; safe environment for drivers and workers. In addition, merging has been found to be one of the most stressful ; aspects of driving and a merge process that is viewed as “unfair” through actions like queue jumping can lead to ; further unsafe behaviors stemming from “road rage.” To address these issues, the work in this project will focus ; on lane control solutions for intermediate and long-term highway work zones. In order to evaluate network ; performance, driver behavior, driver operations, and impacts on safety, several tools were used. Using a ; combination of field observations, microsimulation, and dynamic traffic assignment tools, the main objective was ; to develop a procedural guide or decision tree for freeway work zone traffic control planning. This procedural ; guide would then be presented to the Texas Department of Transportation in a pilot training workshop. Using ; microsimulation software, with a focus on VISSIM, the analysis of different applications of merge concepts ; through delay and safety is presented in the project. In order to appropriately draw conclusions about and identify ; trends of different merge concepts from the microsimulation software, early merge, late merge, and signal merge ; were first explored in a thorough literature review. In addition to delay and queuing analysis completed using ; VISSIM, the Federal Highway Administration’s Surrogate Safety Assessment Model (SSAM) was used to ; address the effects of implementing signal merge on rear-end and lane-change conflicts. Compiling the data ; collection, VISSIM microsimulation outputs, and SSAM signal merge safety outputs, general conclusions and ; decisions were provided.
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Main Document Checksum:urn:sha-512:8d636f7285790af9308c212d6fa5be0b580e66694653ce6c6266c98ae0d8d6dd0c7d08af7cd63ea8dbe8aea20b55e201574ae9a5cd4346179ce9284f87530afe