AGVs receive instructions regarding tasks to be performed via localized wireless I/O communication devices (604) onboard the AGVs from localized wireless communications units (600) positioned about the facility, for example, at conveyors (202). The wireless communications units (600) utilize I/O devices (604) which have a limited range so as to be truly localized in their operation. The AGVs have a sophisticated onboard control system (130) that includes a destination determination system (140), a routing system (142), a navigation system (144), and a crash avoidance system.