A methodology that improves the operational use of reference schedules for the North-South line of the Metro Company of Sao Paulo is presented. Improvements with respect to the reference schedules are obtained by exploring the fact that the model used to generate reference schedules does not differentiate trains being dispatched from the Jabaquara yard. The strategy takes into account the maximum delay time possible with respect to the arrival time of each train in Jabaquara such that no train exceeds its capacity, and there is no violation of physical constraints imposed by the system or by maintenance requirements. Based on the limits determined above, the reference schedule is modified to adjust the arrival times at Jabaquara in order to redispatch trains. This methodology has been implemented and computer simulations have shown that it can improve further the operational utilization of trains.616516
