摘要
针对中国城市道路中存在的交通拥挤现象,通过对城市道路路段上环形线圈采集到的交通流流量和占有率数据进行对比性分析和统计推导,从理论上论证了交通拥挤产生的原因;提出了交通拥挤现象出现与消散过程的相对增量判别准则,并利用给出的判别准则构造出相应的拥挤检测指标,给出了城市道路路段上交通拥挤的平均占有率自动检测算法;最后结合实际调查的数据,对算法的正确性进行了验证。
Authors studied the basic relationship between flow and occupancy to propose a new criterion for identifying the onset of congestion in the road networks. With the criterion, authors derived some new guidelines for detecting congestion incidents, and could also measure off the traffic stream into four stages. Finally, with the research in above, authors advanced a new detection algorithm for road traffic congestion incidents which was validated by using the data from actual investigation.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2006年第3期82-86,共5页
China Journal of Highway and Transport
基金
国家自然科学基金项目(70122201)
教育部高等学校博士学科点专项科研基金项目(20020247036)
关键词
交通工程
交通拥挤
理论分析
检测算法
流量增量
占有率
traffic engineering
traffic congestion
theoretical analysis
detection algorithm
flow increment
occupancy
