You are looking at a schedule that is part of the Land Transport Act 1998. This schedule is called New Parts 1, 2, 5, 7, 8, 9, and 10 substituted in Schedule 2 of Transport Act 1962. It was empowered by section 215(2) of the Act. You can find more information about this in the Act itself, which is available on the legislation website. The schedule has some new parts that replace old ones in the Transport Act 1962. The changes to the schedule are now part of the Act, which you can read on the legislation website, specifically at the link to the Act.