The new fare will automatically be given to anyone who uses pay as you go with Oyster cards or contactless payments, and will allow passengers to make a second bus journey for free within one hour of touching in on the first bus.
For the vast majority of passengers this will mean an end to having to pay two bus fares when changing bus routes, and it is expected to particularly benefit Londoners on lower incomes who rely more heavily on the bus network to get around.
In 2018, possibly sooner, passengers will be able to make unlimited bus transfers within one hour after TfL has upgraded its ticketing technology.