US Patent 7434665 Elevator down peak sectoring with long call response

In down peak, floors of the building are divided into sectors (38), empty cars (50) are assigned (63, 64) to the sector and assigned (65) the highest down call in the sector provided the highest down call is above the committable floor of any car already assigned in the sector, or there is no car assigned in the sector. If a car is not full (52), it will be assigned additional calls (56). If there are no calls in the sector below a car sector which is not full, a long calls routine (67) determines if there is a down call (75), that is in danger of becoming a long-waiting call, ahead of a car (69) and if so, assigns that call to the car (76).