I suspect that what motivates the LEA under 'legislation' or 'acts' are fines from central government, perhaps not in the form of an actual fine but some direct or indirect financial sanction. Hence why the LEA usually send first a penalty fine notice that if paid results in no further action relating to the 'offence'. A monetary motivation it seems. It is worth pointing out that it is claimed that statutes are only given power in law or of law by consent, consent of the governed. Statutes, acts or legislation as it may be does not fall under common law or law of the land but rather statutory law or law of the sea.