The money paid for a ride, particularly for a taxi, bus, or train, is formally called a "fare." In the context of aviation, it is referred to as "airfare." The term "fare" encompasses the base cost of the transportation service and any mandatory surcharges, such as fuel fees or booking fees. In 2026, most fares are calculated through a "Fare Structure," which can be a flat rate (common for city buses), a zone-based rate (common in London or Berlin), or a metered rate (traditional for taxis). When using a rideshare service like Uber or Lyft, the cost is often called a "ride price" or "trip total," though it is still technically a fare. In a historical or more formal legal context, it may be referred to as "passage money." It is distinct from a "tip" or "gratuity," which is an optional, additional payment made to the driver for good service. The "farebox" is the physical or digital device used to collect these payments upon entry or exit of a vehicle.