In this Division—
"unattended", for a heavy vehicle, means—
(a) there is no-one in or near the vehicle who appears to be its driver; or
(b) there is a person in or near the vehicle who appears to be its driver but the person is—
(i) unwilling, or not qualified or fit, to drive the vehicle; or
(ii) not authorised by the operator of the vehicle to drive it; or
(iii) subject to a direction under section 524.