A robotic transport system including a drive section connected to a frame, an articulated arm operably coupled to the drive section providing the articulated arm with arm motion in at least one axis of motion moving at least a portion of the articulated arm in a collaborative space, corresponding to the frame, from a first location to another different location in the collaborative space, the articulated arm having an end effector with a workpiece grip having workpiece engagement members engaging and holding a workpiece during workpiece transport, by the arm motion in the at least one axis of motion, wherein at least one of the workpiece engagement members is frangible compliant, having a frangible compliant coupling between a distal portion of the at least one of the workpiece engagement members and a base portion of the end effector from which the at least one of the workpiece engagement members depends.