33.—(1) Where a person (“P”) is given a penalty notice—
(a)no proceedings may be brought against P for the penalty offence to which that notice relates before the end of the period of 28 days, beginning with the day on which they were given the notice; and
(b)P may not be convicted of the offence if the penalty is paid in accordance with regulation 34 before the end of that period.
(2) Paragraph (1) does not apply if the penalty notice is withdrawn in accordance with regulation 37.