We create the map symbology and ArcGIS Server service for our transit department. There are ~ 20 to 25 routes. Along certain busy locations, there can be as many as 9 routes that overlap. Currently we use line offsets to make sure that all routes are visible. This can be tricky, since changing the offset to make a line visible in one location can make it disappear behind another line in a different location, causing a domino effect. It has been suggested to me to use cartographic representations, but we can't do this since we are not the owners of the data. It also doesn't fix the bigger problem of addressing route changes/additions. Since bus service is expanding here, routes are occasionally moved or added, causing us to do a lot of symbology work. I would like to see a tool that disperses line symbology where there are coincident routes, but leaves it as is (on the centerline) when it is the only route.
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