It's expected on Wednesday that industry bosses will confirm a public consultation on the gradual closures of hundreds of ticket kiosks over the next three years.
Some will remain in large stations, but staff will be moved to concourses to sell tickets, offer travel advice and help people with accessibility issues.
The RDG's move to begin a consultation about the future of ticket offices has been made by the Rail Delivery Group RDG, which represents train companies, after talks with the RMT union failed to reach an agreement.
The industry body has said only 12% of passengers are currently sold on average at station kiosks, down from 85% in 1995, with passengers buying more tickets online or at machines.
It argues that its changes will enable staff to come out of behind the glass of station offices and be free to help more passengers. Under the new arrangement, a small number of trains have already started operating.
The railway industry has always been open and honest about the need for the railway to evolve with its customers to provide a thriving long-term future for an economically vital service, the RDG spokeswoman said.