substitute
(a) for an offence mentioned in the Australian Road Rules, rule 20 (Obeying the speed-limit), rule 264 (Wearing of seatbelts by drivers), rule 265 (3) (Wearing of seatbelts by passengers 16 years old or older) or rule 266 (Wearing of seatbelts by passengers under 16 years old)—double the number of demerit points mentioned in schedule 1, part 1.2, column 6 for the offence; or