Emergency air lines are often coded with the color: Question Emergency air lines are often coded with the color: Answers Green. Orange. Yellow. Red. Explanation In general, the parts of the service air line are coded blue and the parts of the emergency air line are coded red. This questions appears in the following tests: Colorado Combination Florida Combination Georgia Double Indiana Combination Maryland Combination New Jersey Combination North Carolina Double North Carolina Combination North Carolina Combination South Carolina Combination Utah Combination West Virginia Tank
