摘要
为了研究双车道公路上的超车行为,定义了可回车车头时距与可超车车头时距,通过超车试验得到了两者的临界间隙值;分析了单向、双向车道的最小通行能力,合理解释了双向车道通行能力值小于2倍单向车道通行能力值的原因;最后确定了中国双车道公路上跟车车头时距值和跟车率。结果表明:根据实测数据及拟合仿真试验得到的双车道公路的基本通行能力为3 000 pcu.h-1。
In order to research overtaking behavior on two-lane highways, the returnable time headway and the overtakable time headway were defined and their critical gap values were attained according to overtaking experiment. The minimum traffic capacity of one-lane highway and two-lane highway were theoretically analyzed, and the reason that two-lane highway traffic capacity is smaller than twice as that of one-lane was explained rationally. Finally, the following time headway and following rate of two-lane highways in China were confirmed. Results show that according to the field data and fitting simulation experiment, the basic traffic capacity on two-lane highways is 3 000 pcu · h^-1.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2007年第5期106-111,共6页
China Journal of Highway and Transport
基金
国家西部交通建设科技项目(200331822309)
关键词
交通工程
双车道公路
超车试验
通行能力
可接受间隙
跟车率
traffic engineering
two-lane highway
overtaking experiment
capacity
acceptablegap
following ratio
作者简介
刘江（1974-），男，河南许昌人，工学博士，E-mail：jliu999@hncd．gov．cn。
