1. In this Schedule—
“fixed penalty” shall be construed in accordance with paragraph 4;
“fixed penalty notice” means a notice offering an opportunity to discharge any liability to conviction of the offence to which the notice relates by payment of a fixed penalty in accordance with this Schedule;
“fixed penalty offence” means an offence under paragraph (a) or (b) of section 21;
“prescribe” means prescribe by regulations subject to negative resolution.