Hello We have developed an automated process for the transportation ministry to do just this, based on geometric network of the bus routes & ArcGIS Schematics. You can see a copy of the sample map we produced using this process on the ArcGIS Map Book Vol.28 (page 96): Map Book 28 If you want we can discuss possibilities of using the knowledge & code we have. Please contact me through email: mory@systematics.co.il . Regards
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