It follows an announcement of 500 extra buses between now and 2021 - as part of an investment plan that will also see £25 million spent on customer service training for around 25,000 bus company staff.
At the moment, bus drivers can use their discretion to allow people onto buses for free in extreme circumstances - but Boris Johnson's Deputy Mayor for Transport, Isabel Dedring told London Live that a spike in complaints in this area has led Transport for London to plan more specific training.
"We're looking at the types of complaints we're getting in and also complaints where we've seen an increase recently and making sure were targeting training in the right areas."
"Let's say it's late at night and there's a teenager who might not have the right kind of card or it's you know, obscured or the card is out of date. Bus drivers do get very specific training around that, but it doesn't always work because we do still get complaints where the situation hasn't been handled in the right way, so that would be one area."