1. The length of the trunk road described in the Schedule to this Order and shown by broad striped hatching on the deposited plan shall cease to be a trunk road and shall be classified as a classified road as from a date to be specified in a notice given by the Secretary of State to the County Council of Cambridgeshire who will become the highway authority responsible for that length. The date specified will be the date on which the new trunk roads are opened for through traffic.