(1)  The acceptance of an infringement notice is not an admission of liability in any civil proceedings.

(2)  Proceedings against a person for an offence to which an infringement notice relates that has not been withdrawn must not be brought –

(a) if the person accepts the infringement notice; or

(b) within –

(i) 28 days after the notice was served, if the person has not been allowed a further period under section 121 ; or

(ii) 42 days after the notice was served, if the person has been allowed a further period under section 121 .