Fare

A fare is the fee paid by a passenger for use of a public transport system: rail, bus, taxi, etc. In the case of air transport, the term airfare is often used. Fare structure is the system set up to determine how much is to be paid by various passengers using a transit vehicle at any given time. A linked trip is a trip from the origin to the destination on the transit system. Even if a passenger must make several transfers during a journey, the trip is counted as one linked trip on the system.The rules regarding how and when fares are to be paid and for how long they remain valid are many and varied. Where the fare can generally be predicted (such as fixed fare systems) fare is usually collected in advance; this is the usual practice of rail and bus systems, who usually require the payment of fares on or before boarding. In the case of taxis and other vehicles for hire, (where the total fare will not be known until the trip is completed) payment is normally made at the end of the ride. Some systems use a hybrid of both, such as a rail system which requires prepayment of the minimum fare, and collecting amounts above the minimum (if the net cost of the trip exceeds the minimum fare) at the end of the trip.