随着我国国民经济和交通事业的快速发展,各种交通问题更加明显的突显出来,交通信息化的发展愈显重要,这也成为目前各发达国家交通界研究的重点。 With the rapid development of our country’s national economy and transportation, all kinds of traffic problems have become more obvious. The development of traffic information becomes more and more important. This has also become the focus of research in the transport sector in various developed countries.