Network Structure


 * Nodes (entry, connector, exit)
 * Id numbering
 * entry (70x)
 * exit (80x)
 * ramp connector (60x)
 * Links (entry, connector, exit)
 * Id numbering
 * concatenation of upstream and downstream node Id's, in direction of travel
 * Orientation angle
 * Lanes
 * Id numbering
 * from outside to inside (lane 1 is outer most lane)
 * Types
 * Regular
 * Left Turn Bay
 * Etc.
 * Up/downstream connecting link/lane Id's