Rewarding parents for their children's use of safety seats.
D002648:Child; D002675:Child, Preschool; D003299:Cooperative Behavior; D005260:Female; D006801:Humans; D007223:Infant; D008297:Male; D011482:Protective Devices; D012149:Restraint, Physical; D012201:Reward; D012622:Seat Belts; D014040:Token Economy