You can specify the direction of movement allowed for a link in a network topology. AutoCAD Map 3D toolset uses this direction when tracing through network topology for path traces, best route analysis, and flood traces.
To specify the direction for a link
- Verify that the network topology containing the link is loaded. You can specify link direction for network topologies only.
- In the map, double-click the link for which you want to specify direction.
If more than one topology contains the same link, select one of the topologies. Update the other topologies later.
- In the Properties palette, under the Topo properties, choose a setting for the Flow Direction property:
- Bi-Directional — Movement is allowed in both directions.
- Forward — Movement is allowed only in the direction that the link was created.
- Reverse — Movement is allowed only in the opposite direction of the direction that the link was created.
The new direction setting is assigned to the link.
Note: You can also store a direction value in an object data table or an external database table. When you run a shortest path trace, best route analysis, or flood trace, you can specify the location of this data. When storing this data, use 0 for Bi-Directional, 1 for Forward, and -1 for Reverse.