3.—(1) Regulations may provide that an authorised person may, before a goods vehicle is moved by virtue of paragraph 5—
(a)fix an immobilisation device to the vehicle in the place where the vehicle has been detained, or
(b)move the vehicle, or require it to be moved, to a more convenient place and fix an immobilisation device to the vehicle in that other place.
(2) Regulations may provide that on any occasion when an immobilisation device is fixed to a goods vehicle in accordance with the regulations the person fixing the device must also fix to the vehicle a notice—
(a)indicating that the device has been fixed to the vehicle and warning that no attempt should be made to drive it or otherwise put it in motion until it has been released from the device,
(b)specifying the steps to be taken to secure its release, and
(c)giving such other information as may be prescribed.
(3) Regulations may provide that—
(a)a goods vehicle to which an immobilisation device has been fixed in accordance with the regulations may only be released from the device by or under the direction of an authorised person;
(b)an immobilisation notice shall not be removed or interfered with except by or on the authority of an authorised person.