New South Wales Consolidated Acts(cf model provisions, s 47)
(1) This section applies to a person (in this section called the "authorised person") who is:(a) a responsible person to whom a direction is given under section 153 to run the engine of a vehicle or combination, or(b) an officer authorised by section 153 (8) to run the engine of a vehicle or combination, or(c) a person authorised by an officer under section 153 (8) to run the engine of a vehicle or combination.
(2) The authorised person may run the engine even though the person is not qualified to drive the vehicle or combination, if the officer believes on reasonable grounds that there is no other person in, on or in the vicinity of the vehicle or combination who is more capable of running the engine than the authorised person and who is fit and willing to run the engine.
(3) The authorised person may use reasonable force in complying with the direction to run the engine or when acting under the authority of section 153 (8) to run the engine.
(4) It is immaterial that the authorised person is not authorised to run the engine.
(5) The authorised person is, in complying with the direction to run the engine or when acting under the authority of section 153 (8) to run the engine, exempt from any other provision of the road transport legislation to the extent that the provision would require him or her to be licensed or otherwise authorised to do so.