Train dispatchers are required to be intimately familiar with the physical characteristics of the railroad territory for which they are responsible, as well as the operating capabilities of the locomotive power being used. Experienced train dispatchers learned the idiosyncrasies of the locomotive engineers and train conductors and melded that knowledge into the operating decisions made. An efficient train dispatcher could utilize the rule book, timetable, train orders and personal experience to move a large number of trains over the assigned territory with minimal delay to any train, even in single-track territory.