Abstract: A system and method for warning an individual of entry into an unsafe zone, particularly one that includes a floor or overhead conveyor, comprises a plurality of flexible upright members. The members are arranged to cover or affront the unsafe zone and are at a height so that an individual will contact and deform the members. Such contact then warns the individual that he or she is entering or approaching an unsafe zone. The flexible upright members can be arranged in separable or integral fashion on one or more bases. When using a plurality of bases, the bases can be sized and arranged to cover or abut any configuration of an unsafe zone.