This SAE Aerospace Recommended Practice (ARP) provides criteria for the development and standardization of placards containing signs@ symbols and/or instructions for locating and operating exits and emergency equipment that might be used or operated by cabin occupants and rescue personnel under emergency conditions. In addition@ this ARP gives guidance in the selection and development of warning placards. The placards are intended to be seen and understood by occupants within and@ in the case of external exit placards@ by persons outside of the airplane.