Hello dear @ReeK0807 [ ROMANIA ] welcome to forum! They said in the rules already If you read, you will see and you can find out by searching on youtube or google
Have a nice day.
§3 - Save Editing
Causing extreme lag or game crashes by save editing is not permitted. Extreme lag will not occur from duplicate parts unless the amount is truly excessive. If you save edit to create a very long trailer combination but cannot safely handle it, you are liable to be banned for reckless driving / blocking and recommended to remove the particular mod. If the Game Management thinks that your modification is not fit for our servers or negatively impact other people, you are liable to be banned until the modification has been removed.