next point relation

ordered pair of points (A, B) for which a direct connection exists from A to B along the path of the referenced location
NOTE 1 to entry: In the road network, a direct connection between points A and B exists when point B can be reached from point A via part of the road network, without visiting intermediate points in the location reference.
This excludes points connected in a GDF graph via a node representing an intersection-not-at-grade. Such points are not considered to be directly connected.

Application Area: ITS Spatial data and ITS Database technology