6. In this Order:–
(1) All measurements of distance are measured along the route of the relevant highway;
(2) (i) “the deposited plan” means the plan numbered HA10/2–WO79 marked
“The Neath–Abergavenny Trunk Road (A465) (Improvement from Aberdulais to Glynneath and Slip Roads) Order 1991” signed by authority of the Secretary of State and deposited at the Welsh Office Repository, Curran Embankment, Cardiff;
“the existing rounda bout” means the roundabout known as Aberdulais Inter change on the trunk road;
“the main trunk road” and “the slip roads” have the meanings given in article 1 of this Order;
“the new trunk road” means the new highways mentioned in article 1 of this Order;
“principal road” as a classification for a highway, means that the highway is a principal road for the purposes of enactments and instruments which refer to high way classified as principal roads and is also classified for the purpose of every other enactment and instrument which refers to highways classified by the Secretary of State; and
“the trunk road” means the Neath–Abergavenny Trunk Road (A465).