Coverages may contain a number of feature classes. The data that you will see imported into the dataset is stored in several feature classes in three different coverages.

The feature classes in coverages are topologically related to each other. The first feature class listed in this coverage is an arc feature class. Arc feature classes store linear features. In this coverage, there are two route feature classes. Routes are linear features that are collections of the features in the arc feature class. There is a single polygon feature class. Polygon feature classes are built from features in the arc and label feature classes. Each polygon is defined by a set of linear features from the arc feature class and has attributes stored with a label point from the label feature class. In this coverage, there are three region feature classes. Regions are area features that are collections of features from the polygon feature class.