【摘要】 通过回顾入口匝道单点控制经典方法的优缺点及适用条件,分析上海典型匝道——江苏路匝道的几何布局、占有率及速度的实测数据,运用微观仿真软件V iss im 4.0和VAP(动态控制编程)模块对无控制、定时控制、动态A linea控制、动态DC控制等控制策略进行仿真评价,实测数据和仿真结果对比分析表明,对快速路入口匝道控制是必要的;A linea单点控制策略优于定时控制、动态DC控制;A linea单点控制适用于上海快速路入口匝道控制。更多还原

【Abstract】 Firstly,several representative isolated ramp-metering algorithms are described in this paper.Then,the field data including layout of ramp,occupancy and velocity in Jiangsu Expressway are discussed.Further,this paper implements the selected control strategies such as no-control,pre-timed control,Alinea-control and DC-control in Vissim by using VAP control module.At last,field data and computer simulations shows that it is necessary and urgent to implement ramp-metering,that Alinea algorithm is superior to fixed-time-control and DC-control,and that Alinea algorithm is suitable for ramp metering in Shanghai expressways.更多还原