The overall high-level plan for rake movements is described in a rake link booklet issued for official use only by a Zonal railway, which has details of the planned rake links, composition, marshalling order, permissible loads and accommodation in Mail / Express & Passenger trains handled by the Zone.
The schedule of the train is drawn by the respective Zonal Railway so as to run to the maximum before taken for the regular maintenance. This is published through a booklet by COM and CPTM. The rake link is drawn up keeping in mind asset utilization and maintenance schedules for the stock. The day-to-day operational schedules are then drawn up with this as the basis and used by the operational staff / marshalling yard staff. The rake link is also used by the reservation staff to determine the sizes and distribution of reserved accommodation quotas.