They will receive an emergency fare advice slip to acknowledge the One More Journey feature has been activated and the credit will become negative. The Oyster card will need topping up before another journey can be made.
Transport for London have started the scheme a month earlier than planned following a successful trial on 500 buses across the capital. They found most people paid by cash if they did not have sufficient credit on their Oyster card.
Mike Weston, TfL Director of Buses, said: “During our trial over 77,000 journeys were enabled because of Oyster ‘One More Journey’ with positive feedback received from both passengers and bus drivers.
“Introducing this facility is the first of many steps we are taking to ensure a smooth transition to cash free bus travel from July 6 when passengers will benefit from quicker boarding and the guarantee of always paying the cheapest fare for their journey by paying with an Oyster or contactless payment card.”