Traffic Commissioners (Bus Deregulation) Mr. Hancock asked the Secretary of State for Transport if he will make a statement about the work and the effectiveness of the traffic commissioners following bus deregulation in 1986. Mr. David Mitchell The transitional arrangements for registration of bus services under the Transport Act 1985 placed a heavy burden of work on the traffic commissioners and their staff. They are to be congratulated on the way in which they have discharged these duties.