面向仿真的车道级基础路网模型及其应用

Research of Lane-level Basic Road Network Model for Simulation and Its Application

交通路网是交通领域应用研究的基础。从满足微观交通仿真需求角度分析了路网建模的要点,提出一个面向微观交通仿真的车道级基础路网数据模型。该模型基于分层拓扑组织路网要素,路网建模单元内部具有交通组织不变性,向下细化至车道描述,向上可根据不同需求组合为抽象路网。模型包含子路段、子路段结点、有向子路段、车道、车道连接器五个部分,能够细致地描述路网拓扑结构和道路几何条件。该模型可满足道路交通设施的自动布设与管理、交通仿真路网建模等应用需求,以VISSIM为例,将该模型应用于微观交通仿真模型的自动建模中,实现了仿真路网的自动生成。

Traffic network is one of the fundamental components in traffic field. The requirement for traffic road network in microscopic traffic simulation was analyzed, and a lane-level basic road network model for microscopic traffic simulation was constructed. The model was constructed based on the hierarchical topological organization network elements. The road network modeling unit has the transportation organization invariance, the lanes could be described precisely, and road network modeling units could be combined into abstract network according to different traffic demands. This model was composed by 5 parts： link, node, arc, lane and laneconnectors. The network topology and the road geometry could be described in detail. The model could implement the automatic deployment and management for road traffic facilities, and the modeling of traffic simulation network etc. The model was applied in the network modeling of VISSIM and the simulation road network was built automatically.