高速公路通信网络的结构应以业务流量、流向为主要依据,要考虑经济性、网络安全性和可靠性。高速公路通信系统的建立原则:网络开放性。便于与各种网络互连互通,形成规模经营;网络可靠性。设计和设备应具有先进、可靠的技术保证。 高速公路通信系统的特点:光纤程度高。光纤化程度可满足现在及未来需要;数字图像传输。数字图像适合高速公路通信远距离的图像监控应用,将会取代模拟图像成为高速公路图像监控的一种新技术;可靠性高。关键设备及部件应为主备方式,网络 The structure of expressway communication network should be based on the traffic flow and flow direction, and economy, network security and reliability should be considered. The Establishment Principle of Expressway Communication System: Network Openness. Facilitate the interconnection and interoperability with various networks, the formation of large-scale operation; network reliability. Design and equipment should have advanced, reliable technical assurance. Highway communication system features: a high degree of fiber. The degree of optical fiber to meet the needs of the present and the future; digital image transmission. Digital image suitable for highway communication remote monitoring applications will replace analog images become a new technology for highway image monitoring; high reliability. The key equipment and components should be the main preparation method, the network