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城市交通电子导游系统是针对城市规模不断扩大，城市道路不断开拓，公交线路不断调整的问题，以及城市居民和外来客人熟悉和了解城市交通设施的要求而设计、实现的系统。本文介绍了该系统的基本构成和实现的功能。地理空间数据是电子导游系统中最关键的数据，它表达了现实世界
The system of urban traffic electronic tour guide system is designed and implemented to meet the requirements of urban residents and foreign tourists who are familiar with and understand the urban traffic facilities in view of the expanding urban area, the continuous development of urban roads and the continuous adjustment of bus routes. This article describes the basic components of the system and its functions. Geospatial data is the most critical data in electronic tour guide system, it expresses the real world