物理学报2012，Vol.61Issue(24)：332-339,8.
基于元胞自动机模型的高速公路可变速度限制交通流特性分析
Characteristic analysis of traffic flow in variable speed limit section of freeway based on cellular automaton model
摘要
Abstract
Based on symmetric two-lane Nagel-Schreckenberg (STNS) model, a cellular automaton model of variable speed limit section in freeway is established with access to real-time traffic information of intelligent transportation system (ITS). The effects are discussed about how the different speed limit values, the lengths of speed limit section, and the different traffic states affect the traffic flow and the traffic volume via the simulation experiment of dynamic speed control. The effectual condition of speed limit is analyzed. The results of the examples show that speed limit can be used solely under some traffic states as an assistant traffic management strategy. The traffic jam phenomena can be suppressed and the goal of achieving a largest traffic flow and reducing the passing time of vehicles can be realized by using the dynamic speed control method with the different speed limit values and lengths under some traffic states.关键词
元胞自动机模型/智能交通系统/连续交通流/可变速度限制Key words
cellular automaton model (CAM)/intelligent transportation system (ITS)/continuous traffic flow/vari-able speed limit分类
交通工程引用本文复制引用
张晶晶,庞明宝,任沙沙..基于元胞自动机模型的高速公路可变速度限制交通流特性分析[J].物理学报,2012,61(24):332-339,8.基金项目
国家自然科学基金（批准号：50478088）和河北省自然科学基金（批准号：E2011202073）资助的课题. （）
