Allow me to contribute a bit and please don't take this the wrong way. I understand why you are using tariff. You are using the spanish tarifa.
The word commonly used to represent bus payments is "fare" (train fare, etc). Hope this helps!.
Tariff in english is commonly used instead to refer to the word "arancel" i.e. the cost to export / import food, etc.
Allow me to contribute a bit and please don't take this the wrong way. I understand why you are using tariff. You are using the spanish tarifa.
The word commonly used to represent bus payments is "fare" (train fare, etc). Hope this helps!.
Tariff in english is commonly used instead to refer to the word "arancel" i.e. the cost to export / import food, etc.