Creating a new route

Routes are constructed in the advanced linear referencing system (ALRS) by combining centerline features with route tables and assigning measures to them using calibration point features. See Data in the ALRS to learn more about the data elements used in an ALRS. To add a new route to an LRS Network, you must first have source geometry already created. When you create a new route, you apply attributes to the source geometry by setting the Activity Type to Create Route on the ALRS Edit Tools toolbar.

Steps:

1. Start ArcMap and add the LRS Network and any event layers you want to work with to your map.

   You must have at least one editable feature class, such as Redline or CalibrationPoint, to start an edit session. Refer to Starting an edit session with Roads and Highways for more information.

2. Add the layer you want to use for your source geometry.

   See Using the Select Source Geometry tool for more information about selecting source geometry.

3. Zoom to the location where you want to create your new route.
   
4. Set your target LRS Network layer.
5. Choose Create Route on the Roads And Highways Editing toolbar.
6. Optionally, if you have a redline feature, use the Select Redline Features tool to choose the redline for your new route.
   
7. Use the Select Source Geometry tool to choose the source geometry for your new route.

   If the redline and source geometry are very close together, as in this example, you may need to turn off the display for the redline in the table of contents before selecting the source geometry. Otherwise, you may get unwanted redline features in your source geometry selection.

   
8. Click the Apply button .

   The Create Route dialog box appears.

   

   The Create Route dialog box will be automatically populated with information from your redline if you used one.

9. Verify or type the effective date, route ID, from measure, and to measure to complete the form.
10. Define the From Measure. There are many ways to define the From Measure as outlined below:

    Redline	If a redline is selected, the From Measure that is displayed is pulled from the From measure column in the redline attributes. Note: If you select both a redline and one or more source geometry features, the redline attributes take precedent and is input as the From Measure. If the redline feature does not have a From measure column or the field is NULL, the From measure is auto-populated as 0. You can change the method by which the From Measure is calculated using suggested measures. Alternatively, you can reset your selection and select only the source geometry to pull the From Measure from the source geometry length.
    Source geometry	If no redline is selected and one or more source geometry features are selected, the From measure that is displayed is pulled from the source geometry attributes. Note: If a redline and a source geometry is selected, the From Measure is pulled from the redline attributes. You can change the method by which the From Measure is calculated using spatial selection or suggested measures.
    Suggested measures	If you do not know the From Measure, you can let Roads and Highways suggest the From Measure. The Calculate tool returns the From Measure by calculating the source geometry length minus (-) the To Measure. Optionally enter a To Measure. Next to the From Measure, click Calculate .

    When you hover the pointer over the From Measure field, text appears at the bottom of the dialog box to let you know how the From Measure was calculated.

11. Define the To Measure. There are many ways to define the To Measure as outlined below:

    Redline	If a redline is selected, the To Measure that is displayed is pulled from the To measure column in the redline attributes. Note: If you select both a redline and one or more source geometry features, the redline attributes take precedent and is input as the From Measure. If the redline feature does not have a From measure column or the field is NULL, the From measure is auto-populated as 0. You can change the method by which the To Measure is calculated using suggested measures. Alternatively, you can reset your selection and select only the source geometry to pull the To Measure from the source geometry length.
    Source geometry	If no redline is selected and one or more source geometry features are selected, the To measure that is displayed is pulled from the source geometry attributes. Note: If a redline and a source geometry is selected, the To Measure is pulled from the redline attributes. You can change the method by which the To Measure is calculated using spatial selection or suggested measures.
    Suggested measures	If you do not know the To Measure, you can let Roads and Highways suggest the To Measure. The Calculate tool returns the To Measure by calculating the source geometry length plus (+) the From Measure. Optionally enter a From Measure. Next to the To Measure, click Calculate .

    When you hover the pointer over the To Measure field, text appears at the bottom of the dialog box to let you know how the To Measure was calculated.

12. Click OK.

    The new route is created.