车载自组织网络具有节点快速移动、网络拓扑频繁变化、链路不稳定等特点，若直接使用移动自组网的路由协议，将会引起传输延时增大及丢包率上升等一系列问题．为此，文中提出一种基于位置信息的稳定分簇路由协议，该协议以节点的运动特性作为分簇依据，利用节点的地理位置信息和电子地图信息进行路由决策．仿真结果表明该协议能有效地改善簇结构的稳定性，提高数据传输的实时性，降低网络的丢包率．

As VANET （ Vehicular Ad-Hoc Network） is of high-speed moving nodes, dynamic topology and unstable links, the direct application of MANET （Mobile Ad Hoe Networks） routing protocols to VANET may cause many problems such as long data transmission delay and high packet loss ratio. In order to solve these problems, a position-based stable clustering routing protocol is proposed, which classifies the network into several clusters according to the moving characteristics of the nodes and makes the path decision based on the position and electronic map of the nodes. Simulated results show that the proposed protocol effectively improves the stability of clusters and significantly reduces the data transmission delay as well as the packet loss ratio.