Extended speed gradient model for traffic flow on two-lane freeways  

作　　者：汤昌福 姜锐 吴清松 

机构地区：[1]School of Engineering Science, University of Science and Technology of China, Hefei 23006, China

出　　处：《Chinese Physics B》2007年第6期1570-1575,共6页中国物理B（英文版）

摘　　要：In this paper, the speed gradient （SG） model is extended to describe the traffic flow on two-lane freeways. Terms related to lane change are added into the continuity equations and velocity dynamic equations. The empirically observed two-lane phenomena, such as lane usage inversion and lane change rate versus density, are reproduced by extended SG model. The local cluster effect is also investigated by numerical simulations.In this paper, the speed gradient （SG） model is extended to describe the traffic flow on two-lane freeways. Terms related to lane change are added into the continuity equations and velocity dynamic equations. The empirically observed two-lane phenomena, such as lane usage inversion and lane change rate versus density, are reproduced by extended SG model. The local cluster effect is also investigated by numerical simulations.

关 键 词：two-lane traffic speed gradient model lane usage inversion 

分 类 号：U491.112[交通运输工程—交通运输规划与管理]