Creating a new route

Routes are created in an Esri Roads and Highways network by choosing centerline features that participate in the route and using the Roads and Highways Create Route toolbar command to specify the route's start date, end date, attributes, and measures. The centerline features used to create routes can preexist in the centerline feature class, be digitized into the centerline feature class (using aerial photography or other basemaps for guidance), copied and pasted from other feature classes, or imported from CAD files or other ArcGIS-supported data sources.

Etapes :

1. Start ArcMap and add the network and the centerline layers to the map.
2. Start an edit session.

   For more information on how to start an edit session, see About edit sessions.

3. Zoom in to the location where you want to create the new route.
4. Zoom in to the desired location to create the new route.
5. Set the target LRS Network layer on the Roads And Highways Editing toolbar.
6. Click the Choose Centerlines tool on the Roads And Highways Editing toolbar and click an existing centerline in the map at the location of the new route.

   You can use multiple centerlines to create a route. For more information, see Using the Choose Centerlines tool.

   The selected centerline is highlighted in blue and the arrow shows the direction of digitization.

   Remarque :

   • The direction of digitization determines the direction of calibration, increasing in the direction of digitization. To change the direction of calibration on the centerline, right-click the selected centerline and click the Flip Geometry button .
   • A Redline containing the attribute information on the new route can be selected on the map using the Choose Redline button .

7. Click the Create Route button on the Roads And Highways Editing toolbar.
   The Create Route dialog box appears.
8. Use the arrow button to select a start date for the route.

   Alternatively, type the start date and time in the Start Date text box. The time is automatically populated with 12:00:00 AM by default.

9. Type the route ID of the new route in the Route ID text box.

   The route ID is an intelligent key that uniquely identifies a route for end users. For more information on route ID, visit: Routes in an ALRS.

10. The From Measure value is automatically populated as 0. This value can be changed using the following methods:

    Centerline	If no redline is selected and one or more centerline features are selected, then the From Measure parameter is automatically populated with a value of 0. Remarque : If a redline and a centerline are selected, the From Measure parameter is populated from the redline's attributes. You can change the method by which the From Measure parameter is calculated using suggested measures.
    Suggested Measures	If you do not know the From Measure value, you can allow Roads and Highways to suggest one. The Calculate tool returns the From Measure value by calculating the centerline's geometrical length minus (-) the To Measure value. Optionally enter a To Measure value. Next to From Measure, click the Calculate button .
    Redline	If a redline is selected, the From Measure parameter is populated from the From Measure column in the redline attributes. Remarque : If you choose both a redline and one or more centerline features, the redline attributes take precedent and are 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 automatically populated as 0. You can change the method by which the From Measure value is calculated using suggested measures. Alternatively, you can reset your selection and choose only the centerline. The From Measure parameter is then automatically populated with a value of 0.

11. The To Measure value is automatically populated with the geometric length of the chosen centerline.

    Alternatively, you can type a To Measure value of your choice. There are many ways to define the To Measure value as outlined below:

    Centerline	If no redline is selected and one or more centerline features are selected, then the To Measure value is populated from the centerline's geometric length. Remarque : If a redline and a centerline are selected, the To Measure value is populated from the redline's attributes. You can change the method by which the To Measure is calculated using suggested measures.
    Suggested Measures	If you do not know the To Measure value, you can allow Roads and Highways to suggest one. The Calculate tool returns the To Measure value by calculating the sum of the centerline length and the From Measure value. Optionally enter a From Measure value. Next to the To Measure text box, click the Calculate button .
    Redline	If a redline is selected, the To Measure value displayed is populated from the To Measure column in the redline attributes. Remarque : If you choose both a redline and one or more centerline features, the redline attributes take precedent and are input as the To Measure value. If the redline feature does not have a To Measure column or the field is NULL, the To Measure value is automatically populated with the geometric length of the centerline. The method can be changed by which the To Measure value is calculated using suggested measures. Alternatively, you can reset the selection and choose only the Centerline. The To Measure is then calculated from the Centerline's geometric length.

12. Type the name of the route.
13. Click OK.

    The new route is created. Two new calibration points are also added at the two ends of the route having the From and To Measure values.

    Remarque :

    • Roads and Highways allows you to add attribute fields of your choice that are then modeled on the route table.
    • The attribute fields in the Create Route dialog box support coded value domains. This is particularly helpful when you want the users to enter an attribute by selecting from a drop-down list of attributes.