Retiring a concurrent route

Retiring a concurrent route follows the same workflow as retiring a route, with the added complexity of concurrencies. These cases require that you specify the dominance order for any underlying routes that are not being retired. For more information on route dominance, see Configuring route dominance.

In the following example, we'll retire concurrent route I40. The figure shows a section where Interstate Route 40, US 29, US 70, and State Route 3 make a concurrent route. The route dominance is set on the basis of Functional Classification of the routes where the Interstate Route (Functional Class 1) gets the highest and the Local Roads (Functional Class 7) gets the lowest dominance. Therefore, the order of dominance in the constituent route is I40, US29/US70, and SR3.

Section	Concurrent Routes
a
b	I40, US29
c	I40, US29, US70
d	I40, US29, US70, SR3
e	I40, US29, US70
f	I40, US29
g

手順:

1. Start ArcMap and set up your editing environment for using Roads and Highways.
2. Start an edit session.

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

3. Use the ArcMap navigation tools to zoom to the portion of the route you want to retire.
4. Set your target LRS Network layer on the Roads And Highways Editing toolbar.
5. Click the Retire Route button on the Roads And Highways Editing toolbar.

   The Retire Route dialog box appears.

6. Set the retire date.

   The time is automatically set to 12:00:00 AM. You can edit this value.

7. Click the Select Location From Map button to choose a route to retire.
8. If you want to retire only a portion of the route and not the entire route, manually type the From Measure in the From Measure text box or click the Select Location From Map button to set the From Measure. You can also use the From beginning of Route button to select the start measure of the route. You can also use the To end of route button to select the ending measure of the route.

   A light pink dot is placed on the From Measure location of the route.

9. Manually type the To Measure in the To Measure text box or click the Select Location From Map button to set the To Measure. You can also use the From beginning of Route button to select the start measure of the route. You can also use the To end of route button to select the ending measure of the route.

   A dark pink dot is placed on the To Measure location of the route.

   Check the Recalibrate route downstream check box if you want to remove the length of the retired route from your overall set of measures.

10. Check the Use whole route check box if you want to retire the entire route.
    • If you are retiring the entire route, you do not need to set the From and To Measures. Roads and Highways will populate these for you.
    • If you want to apply measure behaviors to the route you are retiring, leave the Do not apply event measure behaviors box unchecked. If you do not want to apply measure behaviors along the route, check the box.
11. Click OK.

    The Route Dominance dialog box appears.

12. Select the Dominant Routes in the concurrent sections using the drop-down list in the Dominant Route column.
• Each row represents a section of the selected route where route concurrency exists.
• Clicking the row will highlight the concurrent section in pink.
• The Dominant Route column shows the Route ID in conjunction with the display field set up for the network layer (route number in this case). Hence, the text 2001 - 29 in section b suggests that 2001 is the Route ID and 29 is the route number.
• The yellow rows suggest that there is ambiguity in selecting the dominant route based on the route dominance rules set up previously.
  In section c, US70 and US29 have the same functional class; hence, per the rule, they have an equal candidacy for being the dominant route. In this case, you have to select one of them manually using the Dominant Route drop-down list.
• The white rows suggest that there is no ambiguity in selecting the dominant route on the basis of the route dominance rules set up previously.
13. Click OK.

    A minor difference between realigning routes and retiring routes when dealing with concurrency is that the original route is not included in the route dominance when retiring routes. This is because events with Snap behavior cannot snap to a portion of a route that no longer exists. Therefore, setting the dominance to the route being retired would have the same effect as setting the event behavior to Retire. To avoid this potential ambiguity, setting the route dominance to the retiring route is not permitted.

    If you have only two overlapping routes, the Route Dominance dialog box does not appear if the Prompt to confirm dominance when editing network check box is unchecked on the LRS Network Properties dialog box and events with Snap behavior for Retire Route snap to the underlying route automatically.