摘要
利用视频检测系统采集城市快速路冰雪路面上的交通数据,对城市快速路冰雪路面交通流特性进行了研究;分析了冰雪路面对道路交通安全影响,探讨了城市快速路冰雪路面上车速变化、车头时距分布特性,对比分析了冰雪路面与非冰雪路面上城市快速路交通流量与速度的关系,并建立了冰雪路面快速路交通流量与速度关系模型.研究成果将对寒地城市快速路的运营、管理和评价提供科学依据和数据支持.
Urban expressway is rapid arterial that connects main areas of a city. The friction coefficient of road covered with snow and ice is reduced and the traffic operation risk is increased in regions with high latitudes, whose winter is long and cold, leading to the reduction of road capacity and the increase of traffic delays. Using the video detection device, one of the traffic flow information collecting device, a large number of data in the period of ice and snow of cold area are collected, which is the research base of the paper. The macro and micro traffic flow characteristics of urban expressway under conditions of the snow and ice environment are analyzed, such as the instant traffic flow, the distribution of headway time and the properties of the speed distribution. The relative models of speed-volume are built. At the same time, the traffic flow characteristics of the urban expressway in the period of ice and snow of cold areas are compared with that of non-snow period. The outcomes studied above are the foundation for analyzing traffic operation and capacity of urban expressway in the period of ice and snow.
出处
《佳木斯大学学报（自然科学版）》
CAS
2010年第2期232-234,共3页
Journal of Jiamusi University：Natural Science Edition
基金
黑龙江省教育厅科学技术研究项目资助(11521294)
关键词
快速路
冰雪路面
交通流特性
urban expressway
ice and snow covered pavement
traffic flow characteristics
