Kernekoncepter
Optimized joint control strategy for main line-off-ramp speed guidance improves expressway safety in rainy weather.
Resumé
The article discusses the challenges posed by rainfall on expressways, particularly at off-ramps, leading to accidents. It proposes a lane-level speed guidance control strategy to address these issues. The study focuses on optimizing progressive deceleration strategies and utilizing high-precision maps for improved traffic flow modeling. Simulation results show the effectiveness of the proposed control strategy in enhancing total travel time, total traveled distance, and standard deviation of speed.
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Abstract:
- Rainfall impact on vehicle deceleration near off-ramps.
- Importance of dynamic speed guidance using I2V technology.
- Proposed optimized joint control strategy for main line-off-ramp speed guidance.
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Introduction:
- Statistics on rain-related accidents on expressways.
- Challenges posed by rainfall on driving conditions.
- Previous studies on variable speed limit controls.
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Methods:
- Description of METANET model for traffic flow prediction.
- Progressive deceleration control method design.
- Lane level joint control model development.
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Results and Discussion:
- Analysis of optimal variable guidance speeds under different rainfall intensities.
- Comparison of average speeds under fixed limit vs. joint lane level guidance control.
- Evaluation of vehicle speeds on progressive deceleration segments.
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Sensitivity Analysis:
- Impact assessment of driver compliance rates on system performance.
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Conclusions:
- Summary of proposed joint speed guidance control strategy benefits in rainy weather conditions.
Statistik
The friction coefficient decreases under rainy weather, affecting vehicle deceleration process.
Simulation results show improvement in total traveled time (TTT), total traveled distance (TTD), and standard deviation of speed (SD).
Citater
"In recent years, there has been an explosion in high-precision mapping technology."
"Simulation results show that the proposed control strategy outperforms the fixed speed limit control."