13
 
Turn your phone off in health care facilities when any 
regulations posted in these areas instruct you to do so. 
Hospitals or health care facilities may be using equipment 
that could be sensitive to external RF energy.
 
Vehicles
 
RF signals may affect improperly installed or inadequately 
shielded electronic systems in motor vehicles. Check with the 
manufacturer or its representative regarding your vehicle. 
You should also consult the manufacturer of any equipment 
that has been added to your vehicle.
 
Posted Facilities
 
Turn your phone off in any facility where posted notices so 
require.
 
Aircraft
 
Airline regulations prohibit using your phone while in the air.
Switch off your phone before boarding an aircraft.
 
Blasting Areas
 
To avoid interfering with blasting operations, turn your 
phone off when in a “blasting area” or in areas posted: 
“Turn off two-way radio.” Obey all signs and instructions.
 
Potentially Explosive Atmospheres
 
Turn your phone off when in any area with a potentially 
explosive atmosphere and obey all signs and instructions. 
Sparks in such areas could cause an explosion or fire 
resulting in bodily injury or even death.
 
ST3000.01Book  Page 13  Wednesday, March 8, 2000  2:32 PM