Distributed Power
Distributed Power is another form of Multiple Unit Consisting, which has origins in the 1960s.
Instead of all the motive power being located on the front of the train, locomotives will be located in the middle of the train as well. They are controlled from the head end via radio control. Older consists used a robot to control the mid train locomotives. Robots were usually converted B unit locomotives, whose prime mover had been replaced by radio equipment. A common radio control system was Locotrol
The greatest benefit of distributed power—and the reason for development of the original concept—is the reduction of draw-gear draft forces, permitting a wholesale increase in the size of trains without exceeding draw-gear strength, through the use of mid- or end-of-train locomotives.
This can be modelled using Digital Command Control's ability to consist locomotives.