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

• 来源期刊: 中国物理（英文版）
• 关键词: two-lane traffic speed gradient model lane usage inversion
• 年，卷（期）: 2007,（6）
• 页码范围: 1570-1575
• 页数: 6页
• 语种: 英文

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.