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Speed harmonization with enhanced precision
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PRE
AI
DOI：10.1080/15472450.2024.2436856.png)
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摘要
En 中文
Speed harmonization using connected and automated vehicles (CAVs) is one of the most effective strategies for preventing capacity drops. However, existing methods often face challenges in managing heavy traffic and ensuring highly responsive demand control in various situations. This research introduces an enhanced speed harmonization controller that partitions the control zone and employs a cooperative strategy across these partitions. This design optimizes the performance of the control zone and provides three key benefits: (i) improved handling of heavier traffic, (ii) more responsive flow regulation, (iii) producing steadier flow. To evaluate the controller, a microscopic simulation evaluation was conducted. Sensitivity analysis was performed for CAVs’ penetration rate (PR), demand level (v/c ratio). Results show that: compared to state-of-the-art method, the capability for handling flow is improved about 35%. The response efficiency is generally improved by 12–20%. The control smoothness is ensured during entire control process, speed fluctuation is within 0.025m/s2.The capability for handling flow and response efficiency are enhanced with the increase of demand and PR. The control smoothness during entire control process is still ensured no matter how the demand and PR change.
Keyword:
active traffic management
connected and automated traffic
flow regulation
speed harmonization
期刊
IF:
3.8
论文数:
4.6K
被引数:
1.2W
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