(1) A person must obey any reasonable direction for the safe and efficient regulation of traffic given to the person by a police officer or authorised person, whether or not the person may contravene another provision of the Road Rules by obeying the direction.(2) It is a defence to the prosecution of a person for an offence against a provision of the Road Rules if, at the time of the offence, the person was obeying a direction given to the person under subrule (1) .