Regulation 12 Exceptions and relaxations
Nothing in the foregoing provisions of these Regulations shall preclude any person from using the special road otherwise than in accordance with the foregoing provisions in any of the following circumstances, that is to say:–
where he does so in accordance with any direction or permission given by a constable in uniform or in accordance with the indication given by a traffic sign;
where, in accordance with any permission given by a constable, he does so for the purpose of investigating any accident which has occurred on or near the special road;
where it is necessary for him to do so to avoid or prevent an accident or to obtain or give help required as the result of an accident or emergency, and he does so in such manner as to cause as little danger or inconvenience as possible to other traffic on the special road;
where he does so in the exercise of his duty as a constable or as a member of a fire brigade or of an ambulance service;
where it is necessary for him to do so to carry out in an efficient manner:–
the maintenance, repair, cleaning, clearance, alteration or improvement of any part of the special road; or
the removal of any vehicle from any part of the special road; or
the erection, laying, placing, maintenance, testing, alteration, repair or removal of any structure, works or apparatus in, on, under or over any part of the special road; or
where it is necessary for him to do so in connection with any inspection, survey, investigation, or census which is carried out in accordance with any general or special authority granted by the Secretary of State.
Without prejudice to the foregoing provisions of these Regulations, the Secretary of State may relax any prohibition or restriction imposed by these Regulations.