The preceding provisions of this Act shall come into force on such day as the Secretary of State (as respects England) or the National Assembly for Wales (as respects Wales) may appoint by order made by statutory instrument.

Different days may be appointed for different purposes.

For the purposes of Part 6 (civil enforcement of road traffic contraventions), and related repeals, different days may be appointed for different areas.

The Secretary of State (as respects England) or the National Assembly for Wales (as respects Wales) may by order made by statutory instrument make transitional provision or savings in connection with the coming into force of any provision of this Act.