Plotting to LRS using two different start and end route IDs

[KaylaSadallah]

Hi all,

I am trying to create a single polyline on our LRS where the start point is on one Track (one route ID) and the end point is on another track (a different route ID). This is common when we are taking a track out of service and use bounds from one signal to another that might have traveled over a turnout.

My thought was to say that IF RouteFROM is NOT EQUAL to RouteTO, THEN plot StartPoint, THEN plot EndPoint....From here connect the two points using the path of least resistance and snap to closest track centerlines. This might not always work when the turnouts are on the middle express tracks...

Any thoughts!?!?!? Thanks all!!!

[AyanPalit]

@KaylaSadallah Interesting use case - a picture will help explain the scenario.

Have you modelled LRS with Line Network ? This type of network supports events that span routes on the same line as below.

There are additional considerations on modelling Line Network

• Maintains measure across routes with discontinuities in measure and restrict change in measures downstream of the affected area.
• Model events that span routes.
• Route editing across routes that belong to the same line.
• Model and maintain derived network ID and derived measures on Event records. Persisting these attributes help with reporting and quick lookup of continuous measures.

[KaylaSadallah]

Our routes currently look like the drawing in some locations...but how do I implement this on the LRS? What are the steps? The link does not have too much information. Thank you!

[AyanPalit]

@KaylaSadallah 

At organizations with enterprise GIS, LRS layers are consumed by multiple departments. Any LRS model changes should be discussed, planned and tested in a pilot environment. Organizational benefits need to be weighed out and adjustments may be needed. The Esri Community reach out is for ideas and research  before executing any changes.  

I assume you are staff at a railroad/subway organization that has a Linear Referencing System (LRS)  developed using Roads and Highways 

• Is the LRS modelled with Line Network (this type of network supports events that span routes on the same line)?
• If unsure, you can check using layers properties of route network > location referencing > Field Network properties:

Option 1: No Line Network

• Review the data schema/information model requirements of  Network feature class
• Use Create LRS and setup a pilot LRS
• Use Create LRS Network checking the Include Fields to Support Lines parameter and map the additional fields required for an LRS line network. 
• Use Create LRS Event checking the Event Spans Routes. 
• Load sample data for routes and events to this pilot LRS and test that this configuration meets the desired capability. 

Option 2: Line Network

• Some steps may be skipped if Line Network is already configured.
• Use Create LRS Event checking the Event Spans Routes.
• Load sample data for  events and test that this configuration meets the desired capability. 

[KaylaSadallah]

Our routes currently look like the drawing in some locations...but how do I implement this on the LRS? What are the steps? The link does not have too much information.

Thanks!!