198Section 14VehiclesRF signals may affect improperly installed orinadequately shielded electronic systems in motorvehicles. Check with the manufacturer or itsrepresentative regarding your vehicle. You should alsoconsult the manufacturer of any equipment that has beenadded to your vehicle.Posted FacilitiesSwitch your phone off in any facility where posted noticesrequire you to do so.Potentially Explosive EnvironmentsSwitch your phone off when in any area with a potentiallyexplosive atmosphere and obey all signs and instructions.Sparks in such areas could cause an explosion or fireresulting in bodily injury or even death.Users are advised to switch the phone off while at arefueling point (service station). Users are reminded ofthe need to observe restrictions on the use of radioequipment in fuel depots(fuel storage and distribution areas), chemical plants orwhere blasting operations are in progress.Areas with a potentially explosive atmosphere are oftenbut not always clearly marked. They include below deckon boats, chemical transfer or storage facilities, vehiclesusing liquefied petroleum gas (such as propane orbutane), areas where the air contains chemicals orparticles, such as grain, dust or metal powders, and anyother area where you would normally be advised to turnoff your vehicle engine.