Industry WIKI

The Oyster card is a payment method for public transport in London and some surrounding areas. A standard Oyster card is a blue credit-card-sized stored-value contactless smart card. It is operated by Transport for London (TfL) and can be used as part of London's integrated transport network on travel modes including London Buses, London Underground, the Docklands Light Railway (DLR), Lo

A penalty fare, standard fare, or fixed penalty notice is a special, usually higher, fare charged because a passenger using public transport did not comply with the normal ticket purchasing rules. It should not be confused with an unpaid fares notice.