Freight System
The freight traffic has to follow the requirements of the stations, its goods, loading points and the types of waggons for that purpose; a list should be available at the station modules.
Before freight waggons are assembled to trains they get a "load" (provided that they don't run "empty"). That can be "real", e.g. on flat waggons with side stakes, or imaginary, e.g. for closed waggons. There are way bills, for each waggon in the train, for the exact description of the load. Way bills have a size of 66 x 42 mm and contain information about type and weight of the load, sender, destination and receiver.
Due to that system, the traffic with freight waggons make sense. Otherwise the waggons would go to and from without sense. Way bills are usually filled out by owners/operators of the stations. Goods to receive will be put to a fiddle yard before, so they can be loaded on suitable waggons there. For goods to be send, empty waggons can be requested, the goods loaded (including way bills) and put onto the next train for this destination.
Starting point or endpoint are usually fiddle yards. There are only exceptions if there are precise traffic connection on the layout, e.g. wood from a sawmill to a furniture factory. All other goods go to the fiddle yard and from there to a imaginary destination somewhere in Europe. Fiddle yards get a color to mark this imaginary destination. This makes it possible to use identical way bills on different layouts (with different fiddle yards).
