Hello!
We are in the design phase of our R&Hs implementation. We had chosen esri's Model 2 for divided roads. This results in gapped routes. This was fine until we found out that other business units require information for the coincident routes along a primary route. When discussed with Esri Canada yesterday, they suggested that we could eliminate gapped routes and have an event that maintains the existence of a co-route on a segment of geometry. Essentially, the length of the event could be subtracted when getting the distance of a route that is co-routed on a dominant route...i.e. the shared portion isn't counted