Timetable and train order. A method of authorizing trains to operate used on N American railroads from the 1840’s through the mid 1980’s. Trains move according to a timetable schedule that lists when a train may depart a station. Exceptions and additions to the timetable schedules are made using train orders, written documents that give trains specific rights or instructions pertaining to train movements. Train orders had specific wording for specific purposes, called “forms”. For example a Form G train order authorized and extra train. There were also two different documents called forms which were numbered. They were the actual paper documents. A Form 19 was a basic train order and a Form 31 was a train used when a train’s rights were being restricted. That form required the operator to get the signatures of the crew upon delivery.