The Welsh Ministers make these Regulations which revoke the maximum speed limit of 50 miles per hour on the westbound carriageway of the M4 motorway at Rogiet in the County of Monmouthshire which extends from a point 800 metres east of the centre line of Station Road overbridge to a point 752 metres west of the centre line of Station Road overbridge. In consequence, the national speed limit will apply to the said carriageway upon the coming into force of these Regulations.