121Enforcement officer may immobilise vehicle, etc, in specified circumstances

1. An enforcement officer may exercise all or any of the powers conferred by subsection (2) if he or she believes on reasonable grounds that—

2. either—
   1. a person who is for the time being in charge of a motor vehicle,—
      1. because of his or her physical or mental condition (however arising), is incapable of having proper control of the vehicle; or
      2. has not completed a compulsory impairment test in a manner satisfactory to an enforcement officer, who is trained to give the test, when required to do so by an enforcement officer under section 71F; or
      3. has failed or refused to undergo a compulsory impairment test when required to do so under section 71F; or
      4. has failed or refused to permit a blood specimen to be taken when required to do so by an enforcement officer under section 72(1)(a), (e), or (f); or
   2. the requirements of any enactment concerning work time or rest time are not being complied with; and
3. in all the circumstances, the direction or prohibition or action is necessary in the interests of that person or of any other person or of the public.

4. The enforcement officer may—

5. forbid that person to drive a motor vehicle for such period as the enforcement officer specifies:
6. direct the person to drive the vehicle to a specified place where the driver may obtain rest, or where the load on the vehicle or other conditions make it appropriate that the driver should drive to that place:
7. take possession of all ignition or other keys of the vehicle, and for that purpose require that person to deliver up immediately all such keys:
8. take such steps as may be necessary to render the vehicle immobile or to remove it to a place where it does not constitute a traffic hazard.

9. The period for which an enforcement officer forbids a person to drive under subsection (2)(a) must, where the person has undergone an evidential breath test and it appears to the enforcement officer that the test is positive, be a period of 12 hours, unless the enforcement officer is satisfied that there is good reason for imposing a shorter prohibition.

10. An enforcement officer may arrest without warrant a person who fails to comply with a direction given under this section or does or attempts to do any act that is for the time being forbidden under this section.