Creating a new advanced linear referencing system

The advanced linear referencing system (ALRS) extends the geodatabase to provide additional capabilities for linear referencing, including support for multiple linear referencing methods (LRMs), event location management, and a time-aware linear referencing system (LRS). This topic discusses the steps required to create a new ALRS in your geodatabase.

  1. Right-click the target geodatabase and choose New > Advanced Linear Referencing System.
    • In ArcCatalog, the geodatabase can be found in the Catalog Tree.
    • In ArcMap, the geodatabase can be found in the Catalog window.

    The Advanced Linear Reference System Setup wizard appears.

    Create ALRS setup wizard
  2. Click Next.
  3. Name the new ALRS and provide a brief description.

    Name the ALRS
  4. Click Next.

    Map data elements
  5. Map the ALRS schema to the proper data elements. Click here to learn about the data elements used in the ALRS.
  6. Click Next.

    Route relationships page
  7. Define the route relationships to be used in the ALRS schema.
    1. Double-click the connector lines on the Route relationships page of the Advanced Linear Reference System Setup dialog box (step 3 of 5) to bring up the Edit Relationship dialog box.

      Edit Relationship dialog box
    2. Use the field drop-down menus to set the primary and foreign keys for the relationships between routes, centerlines, and calibration points. Click here to learn about establishing relationships in the ALRS.
    3. Click OK.
  8. Click Next.

    Map fields to ALRS data elements
  9. Map fields to ALRS data elements.
    1. Choose ALRS data elements using the Table/Layer drop-down menu.
    2. Map the ALRS fields to the data element field names using the Mapped To drop-down menus. Click here to learn more about the ALRS data elements.
  10. Click Next.

    Finish creating the ALRS
  11. Click Finish to finish creating the ALRS and close the wizard.