Functional Class

The Functional Classification Maps define the classes into which streets and highways are grouped, based on their function within the overall roadway network. The source system is HPMS. This data is for informational purposes and must be field verified prior to being used on a project.道路功能分类地图（Functional Classification Maps）明确了以整体道路路网的功能属性为依据，对街道与高速公路进行分组归类的类别体系。其数据源系统为HPMS。本数据集仅作参考用途，在项目中使用前必须经过现场验证。