2. In this Order—
(1) all measurements of distance are measured along the route of the relevant highway;
(2) (i) “classified road” as a classification for a highway, means that the highway is not a principal road for the purposes of enactments or instruments which refer to highways classified as principal roads but is a classified road for the purpose of every enactment and instrument which refers to highways classified by the Secretary of State and which does not specifically refer to their classification as principal roads;
(ii)“the deposited plan” means the plan numbered CSE209/1/26/01, marked “The A4 Trunk Road (Reading Eastern Boundary to Maidenhead Thicket) Detrunking Order 1993” signed by authority of the Secretary of State and deposited at the Department of Transport, Rom-ney House, 43 Marsham Street, London SW1P 3PY; and
(iii)“the Trunk Road” means the London—Bristol Trunk Road (A4).