(1) A driver must not drive a vehicle at a speed exceeding the applicable speed limit (being a permanent, variable, holiday, urban, rural, temporary, or other speed limit).
(3) A driver who drives at a speed exceeding the applicable speed limit is not in breach of subclause (1) if the driver proves that, at the time the vehicle was being driven,—
(c) the vehicle was being used (on a road subject to a speed limit of 60 km per hour or more) to convey a member of the Executive Council engaged on urgent public business, or to convey any other person authorised for the purpose by the Minister and engaged on urgent public business in the execution of the person's functions.