If you try to use the new workshop in-game integration, then using the Add-ons Custom Owned filter with some routes yields no result, even though it is obvious, from browsing steam manually that there are scenarios. Examples of Routes: Semmeringbahn - Mürzzuschlag to Gloggnitz Norddeutsche-Bahn: Kiel - Lübeck Inselbahn: Stralsund – Sassnitz