Working timetable

A Working timetable (WTT) - (Ger. Buchfahrplan; Fr. Livret de la Marche des Trains; N. America Employee Timetable) - is a set of , 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.

The detail found in Working Timetables includes the timings at every major station, junction, or other significant location along the train's journey (including additional minutes inserted to allow for such factors as engineering work or particular train performance characteristics), which platforms are used at certain stations, and line codes where there is a choice of running line.

Further information may include the train's identification (or "reporting") number which, in Network Rail practice, consists of a four digit alpha-numeric code where the first number indicates the type of train (fast, stopping, Freightliner and so on), followed by a letter indicating the area of operation or destination and then two figures denoting the individual service; what service the train next forms; what formation ("consist") the train has, its maximum speed, and any other information relevant to the operation of the train. A WTT for the Parisian Petite Ceinture belt railway gives a gradient profile and track diagram for the entire railway.

In the USA, the New Haven Railroad Employee Timetable contained such information as: the maximum allowable speeds for different types of locomotives; electrical operating instructions concerning the operation of the AC catenary system and pantographs; designation of on which lines the different types of signalling were operational, e.g. manual block, automatic block and centralized traffic control.

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