在此基础上采集大量道路信息，溶入GIS技术，建立城市道路网络数据库。
Based on the collection of road information, the road network database is constructed by means of GIS technology.
通腾提供了道路网络性能的粒状图片，这些图片来自其交通数据库。
TomTom provides a granular picture of road-network performance from its traffic database.
通腾提供了道路网络性能的粒状图片，这些图片来自其交通数据库。
TomTom provides a granular picture of road-network performance from its traffic database.
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