Baggage is processed in groups rather then individually. This reduces the amount of information processed. For example, groups of baggage, instead of individual items, are tracked. Routing is simpler because groups are fewer than items. A simple system made of gates between the collecting and the output conveyor can manage the routing.
Gates control eliminates traffic control for the incoming items.
Routing is incoporated into scheduling. The batch process type BHS has its disadvantages. Items cannot enter the system as freely as it can in the discrete system. A system schedule determines when items can enter the main conveyor. Because items must wait for its turn to enter the collecting conveyor, large input buffers are needed.