中文摘要：

在综合分析现有道路网络模型的基础上,总结了存在的主要问题,揭示了其发展趋势,论述了新一代道路网络模型的特征是以实际车道为最基本的研究对象,以车道及其相互关系的真三维表达为主要内容,以地面、地上和地下各种因素的综合分析与真实感表现为目标。

英文摘要：

After reviewing the up-to-date road network models and analyzing the critical limitations, the next generation model is proposed, which is characterized by ①the real lanes are considered as the basic modelling primitive; ②the 3D lane-to-lane topology is generated;and ③comprehensive analysis and realistic visualization are available. With the quick development of high-accurate positioning technologies and virtual geographic environments （VGE）, lane-oriented 3D road network models would play more and more important roles in ITS and urban infrastructure management.