Subject to subsection (3) below, all such highways or proposed highways as immediately before the commencement of this Act—
continue to be, and to be known as, principal roads or, as the case may be, classified roads (or both principal roads and classified roads of a category other than principal roads, in the case of highways falling within both paragraph (a) and paragraph (b) above) for the purposes specified in subsection (2) below.
So far as a highway that continues to be a principal or classified road in accordance with subsection (1) above was, immediately before the commencement of this Act, a classified road for the purposes of any enactment repealed and replaced by this Act, it is a classified road for the purposes of the corresponding provision of this Act; and so far as any such highway was immediately before the commencement of this Act a principal or classified road for the purposes of any other enactment, or any instrument, it so continues for the purposes of that enactment or instrument.
The Minister may for the purposes of—
classify highways or proposed highways, being highways or proposed highways for which local highway authorities are the highway authorities, in such manner as he may from time to time determine after consultation with the highway authorities concerned.
References in any provision hereafter contained in this Act to classified roads are references to—