Version 1.1 notes:
1) It corrects a big visualization bug in the national roads (france, german...) that appears when u install RER.
The reason is that the national road sets layout files has references on empty.layout files in default roads instead of their own existing empty.layout files.
2) It allows to have optional roads (historical, derelict, country) added to france and german roads.
In any case, german and france players needs to install the mandatory base pack too, besides default roads will not appear into the 2 national road sets.
Transportation R.E.R. - Road Euro Revolution 1.2
Renewed and expanded default road set + 4 new road sets for default, france, german, american roads