Guide to Safe and Responsible Wireless Phone Use143VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle. You shouldalso consult the manufacturer of any equipment thathas been added to your vehicle.Posted facilitiesTurn your phone OFF in any facility where postednotices so require.AircraftFCC regulations prohibit using your phone while inthe air. Switch OFF your phone before boarding anaircraft.Blasting areasTo avoid interfering with blasting operations, turn yourphone OFF when in a “blasting area” or in areasposted: “Turn off two-way radio”. Obey all signs andinstructions.Potentially explosive atmospheresTurn your phone OFF when in any area with apotentially explosive atmosphere and obey all signsand instructions. Sparks in such areas could cause anexplosion or fire resulting in bodily injury of evendeath.Areas with a potentially explosive atmosphere areoften but not always clearly marked. They include
