8.—(1) Notwithstanding anything in these regulations, the appropriate Minister may grant certificates exempting, for such periods and subject to such conditions, if any, as may be specified therein, particular cases or particular persons from the operation of all or any of the provisions of these regulations.
(2) Any breach of a condition imposed by such a certificate of exemption shall, while it continues, render the certificate void in relation to any tractor or safety cab affected by the breach.