Working timetable
A Working timetable (WTT) - (Ger. Buchfahrplan; Fr. Livret de la Marche des Trains; N. America Employee Timetable) - is a set of timetables, for the internal use of a railway's operating staff, that show all the planned train movements in a defined area. The trains included may be passenger trains, freight trains, empty stock movements, or even bus and/or ship connections or replacements.