When you create an intersection object, a Priority value is assigned to the main (primary) and secondary (side) road alignments .
The following table lists the value of the Priority property:
| Road (alignment) | Priority |
|---|---|
| Main (primary) road alignment | 1 |
| Secondary road alignment | 2 |
If you are creating a T-shaped (3-way) intersection, then the alignment that passes through the intersection is automatically specified as the primary road (main road). In this situation, the Priority is automatically set to a value of 1 for that alignment, and you are not prompted to specify which road is the primary road because this happens automatically.
You cannot change the priority of a road in an intersection after it has been created. However, if you want to change the priority of the alignments during the intersection creation, you can do so from the Geometry Details page of the Create Intersection wizard.
It is also important to note that typically, the secondary road (or lower priority) profile is automatically locked at the intersection location to the elevation of the main road (higher priority) main road. The profile of the main road is not modified.
To change road (alignment) priority during intersection creation
- Click the Home tab
Create Design panel
Intersection. - Advance to the Geometry Details page of the Create Intersection wizard.
- At the top of this dialog box, in the Intersecting Alignments section, select the road (alignment) you want to change by clicking the name of the alignment in the list.
- Click the up or down arrow to change the road priority.
- Continue creating the intersection. For more information, see Using the Create Intersection Wizard.