概括了浮动车技术的基本原理，重点介绍了浮动车信息处理系统的处理流程及地图匹配、路径推测和路况信息计算方法。针对GPS数据精度差、路网结构复杂等影响浮动车信息处理准确性提升的问题，给出了一系列改进型研究工作。最后，给出了评估浮动车信息处理准确性的方法，并指出了浮动车信息处理技术的后续工作。

The floating car technique is one of the key technologies in ITS (intelligent transportation system)to acquire the traffic information in recent years. In this paper, firstly, the fundamental principle of floating car technique is introduced. Then, the enhanced processing procedures of floating car information system, and some important approaches including map matching, path deriving and traffic information calculating are emphasized. To review the key issues affecting information processing accuracy, such as poor GPS data precision and complex road network, a serious of enhanced approaches are presented. Finally, some experiments are given to evaluate information processing accuracy and future work is pointed out.