 Kingda Ka 's over @-@ the @-@ shoulder restraint system consists of a thick , rigid lap bar and two thin , flexible over @-@ the @-@ shoulder restraints . Because the over @-@ the @-@ shoulder portions of the restraint are not rigid , the hand grips are mounted to the lap bar . Kingda Ka 's restraints are also held down by a belt , in case the main locking system fails . To speed loading , riders are asked to secure their own restraints if possible . 
