Always copy your OMSI 2/Maps and OMSI 2/Vehicles folders before installing a new mod.
The base game of OMSI 2 provides a highly accurate reproduction of the historic Berlin-Spandau omnibus line 92. While the physics, pneumatic braking systems, and ticket sales mechanics are top-tier, playing a single route can eventually become repetitive. Official paid DLCs solve this by offering: Omsi 2 All Dlc Free Download