What is the reason there are one, two, and four-sided waybills?
Answer 1. The different sides reflect the number of moves in a car’s cycle between industries. A single-sided waybill will take a car to an industry as a load of supplies or raw material. When it arrives, the waybill is removed and the car becomes an empty and gets returned to its home yard during the next session. Usually the carcard tells the car’s “home route” [if foreign, or home point if a system car] in a notation which is revealed when the waybill is removed. A two-sided waybill could cover placement of an empty for loading at an industry, followed by shipment of the load. A four-sided waybill (most common) will specify several trips in succession, which could be loaded or empty and involve two or several different customers, on or off the layout. Three-trip bills are also possible. If differing numbers of trip waybills are in use, they should contain a notation instructing whether they are to be turned or removed after each step.
