The code, produced by the Disabled Persons' Transport Advisory Committee (DPTAC) is an extended and updated version of the 'DPTAC Spec' first published in 1988.
Speaking at the North of England launch for local authorities bus manufacturers and operators, Mr Freeman said:
'There is no doubt that the DPTAC has made a major contribution towards improving the accessibility of buses.
'The committee has continued to monitor the specification and its application. This restatement, which is based on that feedback, reflects the best practice in bus design and operation.'
The features recommended in the restatement include:
lower steps at the bus entrance; extra handrails in contrasting colours that are easily distinguishable by partially sighted people and in a surface that is easy to grip; palm operated bell pushes that can be reached by seated passengers to reduce the anxiety of elderly and arthritic passengers whose fear of falling may affect their use of bus services.