12. The person in charge of any animal which is carried by a vehicle using a motorway shall, so far as is practicable, secure that—
(a)the animal shall not be removed from, or permitted to leave, the vehicle while the vehicle is on a motorway; and
(b)if it escapes from, or it is necessary for it to be removed from, or permitted to leave, the vehicle—
(i)it shall not go or remain on any part of the motorway other than a hard shoulder, an emergency layby or a verge; and
(ii)it shall whilst it is not on, or in, the vehicle be held on a lead or otherwise kept under proper control.