Buses and coaches performing rail replacement duties have been granted an extension to their non-accessibility window.
They will now be exempted from accessibility requirements until April 30.
The period of exemption is subject to the conditions that train operating companies must source and use compliant vehicles wherever possible in the first instance, only using non-complaint vehicles that has been granted a special authorisation when other options have been exhausted.
They also must ensure that when no compliant vehicle is available terms of condition must provide alternative accessible transport for disabled passengers.
The letter from Chris Heaton-Harris, minister of state to the Rail Delivery Group, added that arrangements must be made in advance during planned engineering works to ensure alternative accessible transport is readily available.