31If in-vehicle wireless equipment is improperly installed and theair bag inflates, serious injury could result.Using your device while flying in aircraft is prohibited. Switchoff your device before boarding an aircraft. The use of wirelessteledevices in an aircraft may be dangerous to the operation of theaircraft, disrupt the wireless telephone network, and may be illegal.■ Potentially explosive environmentsSwitch off your device when in any area with a potentially explosiveatmosphere, and obey all signs and instructions. Potentially explosiveatmospheres include areas where you would normally be advisedto turn off your vehicle engine. Sparks in such areas could causean explosion or fire resulting in bodily injury or even death. Switchoff the device at refuelling points such as near gas pumps at servicestations. Observe restrictions on the use of radio equipment in fueldepots, storage, and distribution areas; chemical plants; or whereblasting operations are in progress. Areas with a potentially explosiveatmosphere are often, but not always, clearly marked. They includebelow deck on boats, chemical transfer or storage facilities andareas where the air contains chemicals or particles such as grain,dust, or metal powders. You should check with the manufacturersof vehicles using liquefied petroleum gas (such as propane or butane)to determine if this device can be safely used in their vicinity.