通过自动行人紧急制动系统检测和减速的昼夜性能差异
Zeinab Bayati1, Asad J Khattak1, Nastaran Moradloo1
1Department of Civil and Environmental Engineering, The University of Tennessee, Knoxville, TN, United States.
Accident; analysis and prevention
|August 29, 2025
概括
步行者自动紧急制动 (P-AEB) 系统在夜间效果较差,碰撞率和速度较高. 在低光条件下提高P-AEB性能对于提高行人安全至关重要.
科学领域:
- 道路安全工程
- 汽车技术
- 运输中的人类因素
背景情况:
- 越来越多的行人死亡需要先进的车辆安全系统.
- 步行者自动紧急制动 (P-AEB) 系统提供潜在的减轻碰撞.
- 在P-AEB的有效性不同,尤其是在夜间的可见性条件下.
研究的目的:
- 在各种可见性条件下评估P-AEB系统的实际有效性.
- 量化白天和夜间场景之间的P-AEB性能差异.
- 确定影响P-AEB系统性能的因素,包括照明和车辆特性.
主要方法:
- 来自公路安全保险协会的2,494个P-AEB测试 (1654个夜间,840个白天) 的分析.
- 使用一个随机效应的赫克曼样本选择模型来估计检测和减速.
- 包含行人移动,车辆类型,燃料和尺寸的变量.
主要成果:
- 白天的P-AEB检测率达到了大约98%,而夜晚的近距离光线为87%和远距离光线为93%.
- 在夜间发生的碰撞频率更高 (23%在近距离相比,白天10%) 和速度更高.
- 与白天相比,素近距离光线降低了P-AEB检测能力高达43%.
结论:
- 目前的P-AEB系统在夜间驾驶时显示效率降低.
- 对于P-AEB系统在低光条件下可靠运行,需要进行显著的改进.
- 车辆和行人因素影响P-AEB性能,需要进一步研究以优化行人安全.
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