The Topology Geometry layers set (topology_geometry_node and topology geometry_segment) contain the definition of the intersection to intersection road model, expressed as connected graph of segments and nodes. It also includes the 2D geometry for these segments and nodes.
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List of nodes located in the partition. Nodes are included in the partition that holds their coordinates. Coordinates are inclusive on the southern and western edges of a partition. Partitions always include their southern and western edges and, with two exceptions, do not include their northern and eastern edges. The two exceptions are: (1) A partition whose eastern edge is 180 degrees east longitude includes the eastern edge; (2) a partition whose northern edge is 90 degree north latitude includes the northern edge.