基于超车行为的双车道公路通行能力分析  

Analysis of Two-lane Highway Traffic Capacity Based on Overtaking Behavior

作　　者：刘江[1] 邵长桥[1] 荣建[1] 任福田[1] 

机构地区：[1]北京工业大学交通工程北京市重点实验室

出　　处：《中国公路学报》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)

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.

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 

分 类 号：U491.254[交通运输工程—交通运输规划与管理]