Test the safety belt when you are seated in the cabin and adjust it to the proper length for you. Prior to take off, flight attendants will demonstrate emergency rescue and evacuation. Please watch closely and refer to the printed materials inserted in the back of the seat in front. Smoking is not allowed on flights. Cellular telephones, citizen band radios, remote control transmitters (video game electronics, and remote controllers), CD players and other transmitting electronics operation are prohibited on board. Additional articles prohibited on domestic flights include video recorders, video players, electronic game devices, computers and peripheral devices, calculators, radios, TVs and electric razors. For international flights, the restrictions are limited to take off and landing (at elevations below 1000 meters). For disabled passengers, airlines may set a limit according to aircraft type and the number of flight attendants for safety reasons. The actual quota should match regulations stipulated by each airline. Disabled passengers should notify their requirements in advance, so the necessary arrangements can be made.