United States Department of Transportation
i
Dynamic Coordinated Speed Control and Synergistic Performance Evaluation in Connected and Automated Vehicle Environment
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2024-09-01
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[PDF-1.75 MB]
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Edition:Final Report
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Abstract:In the vicinity of weaving areas, freeway congestion is nearly unavoidable due to their negative effects on the continuous freeway mainline flow. The adverse impacts include increased collision risks, extended travel time, and excessive emissions and fuel consumption. Dynamic Speed Harmonization (DSH), which is also known as Variable Speed Limit (VSL), has the potential to dampen traffic oscillation during congestion. However, the effectiveness of this strategy is typically limited by the low compliance rates of drivers and potential delays in information transmission and dissemination, and that control strategies can only affect a small area. Fortunately, new opportunities are emerging with the development of Connected and Automated Vehicles (CAVs) that can completely comply with the control system. CAVs can greatly help complement the intelligent transportation systems to enhance a variety of Measures of Effectiveness (MOEs), such as safety, mobility, and environmental sustainability.
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