Since OMSI 2 doesn't have a built-in "mod manager" button for most freeware, you'll need to do a manual "drag and drop":
Due to the age of the original mod, some older links may be broken. The most reliable places to find it now are: OMSI WebDisk & Community : The current go-to source for the SimpleStreets + omsi 2 addon simple streets download top
Many users download an old copy and then complain about bugs. Here is how to verify you have the (latest) release: Since OMSI 2 doesn't have a built-in "mod
The most reliable "top" sources currently available include: Originally developed by Emil, it is frequently cited
, providing a vast collection of splines and intersections required for many popular custom maps. Originally developed by Emil, it is frequently cited as a prerequisite for maps like and Grundorf V4 . Top Download Sources