We are a group of 4 based in Kaiserslautern. We plan to make day trips to Trier and Bingen. I have a few questions:
1) Is Trier included in the VRN region? If not, what is an economical way to get there and back.
2) Is Bingen included in the VRN region? If not, what is an economical way to get there and back.
3) It appears that the VRN Netz ticket is still valid for certain cities not included in the VRN map (e.g., Saarbruken). Is there a way to find out (a list of cities, rather than the map) what cities are covered in the VRN ticket?
4) I understand that the VRN ticket can be used for RE/RB/S-Bahn. These trains may take you outside the area covered by VRN ticket. How to find out which train station to get off at before your journey becomes illegal on the VRN ticket?