Category 12 Surcharges defines the conditions under which surcharges are applicable and the corresponding charge. Should the surcharges for infant and children passenger type codes vary, the data does need to be coded as such. Please refer to ATPCO’s passenger type code hierarchy for a list of passenger type codes that map to child.

The examples below illustrate best practices for adult, infant, and children fares when their surcharges differ from one another. Please note that each example differs as the intent behind each of the conditions differs.