Potentially explosive environments
Switch off your device when in any area with a potentially explosive atmosphere
and obey all signs and instructions. Potentially explosive atmospheres include
areas where you would normally be advised to turn off your vehicle engine. Sparks
in such areas could cause an explosion or fire resulting in bodily injury or even
death. Switch off the device at refuelling points such as near gas pumps at service
stations. Observe restrictions on the use of radio equipment in fuel depots,
storage, and distribution areas, chemical plants or where blasting operations are
in progress. Areas with a potentially explosive atmosphere are often but not
always clearly marked. They include below deck on boats, chemical transfer or
storage facilities, vehicles using liquefied petroleum gas [such as propane or
butane], and areas where the air contains chemicals or particles such as grain,
dust or metal powders.
Failure to observe these instructions may lead to suspension or denial of
telephone services to the offender, legal action, or both.