| 基于自适应临界状态的交通流运营安全评价 |
| |
| 引用本文： | 蒋锐,郭忠印,孔令旗.基于自适应临界状态的交通流运营安全评价[J].武汉理工大学学报(交通科学与工程版),2011,35(5). |
| |
| 作者姓名： | 蒋锐 郭忠印 孔令旗 |
| |
| 作者单位： | 同济大学道路与交通工程教育部重点实验室 上海201804 |
| |
| 基金项目： | 国家863高技术研究发展计划项目(批准号:2007AA11Z235); “十一五”国家科技支撑计划项目(批准号:2009BAG13A02)资助 |
| |
| 摘 要： | 考虑实际交通流中车辆驾驶员的主观能动性,改进交通冲突技术机械式假设的不足,提出交通流自适应临界状态概念.构建车速差、减速度差和行程时间差等3个模型,量化交通流运营状态的自适应能力.以安全车头时距和实际车头时距的差值,评价实时交通流运营安全性.通过实验分析,结果表明基于自适应临界状态的运营风险与历史事故数之间存在良好的相关性.
|
| 关 键 词： | 自适应临界状态 车速差 减速度差 行程时间差 交通风险 |
Safety Audit of Traffic Flows Based on Self-adjustable Critical State |
| |
| Jiang Rui,Guo Zhongyin,Kong Lingqi.Safety Audit of Traffic Flows Based on Self-adjustable Critical State[J].journal of wuhan university of technology(transportation science&engineering),2011,35(5). |
| |
| Authors: | Jiang Rui Guo Zhongyin Kong Lingqi |
| |
| Institution: | Jiang Rui Guo Zhongyin Kong Lingqi (Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China) |
| |
| Abstract: | Considering characteristic of driver subjective in real traffic flows,self-adjustable critical state is put forward firstly conquering mechanical-hypothesis weakness of traffic conflict.Based on differences of speed/deceleration/travel time,analysis models are found to appraise ability of self-adjustable traffic flows.In according to discrepancy between safety headway and realistic headway,traffic flow risk index is introduced to audit real-time traffic safety.Experiment results showed that the relation bet... |
| |
| Keywords: | self-adjustable critical state speed difference deceleration difference travel time difference traffic risk |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
