In the prototype, the train driver has a document that describes the route to be traveled and what can be expected along the way. This includes distances, stations, speed limits, level crossings and any other relevant data such when the train is scheduled to arrive and depart at each station. In Germany this is known as the 'Buchfahrplan' (Book schedule). These used to be printed booklets and now electronic schedules are also used in some trains.

I can now generate such schedules for my layout!

More details on what a Buchfahrplan is and how it works etc is at:
http://cabinlayout.mixmox.com/1/Buchfahrplan

I am not sure what you mean exactly about implementing a Buchfahrplan, as the number of locos does not come into it. The complexity of the layout is what counts.

One could create these manually by hand over a few days.