To deal with these difficulties, the contractors are installing additional equipment. For
example, more laser readers will reduce the probability of misreading the destination of
each bag. More controllers will slow down the carts, reduce misalignments with the
conveyors feeding bags, and minimize the momentum that tossed bags off the carts.
Overall, solutions to the mechanical problems come at the price of increased costs,
reduced performance, and lower costeffectiveness of the system