Prohibition of use of roads
13.—(1) An appointed person may—
(a)as respects a particular vehicle, by oral instructions given by him to the driver, or
(b)as respects vehicles of any particular description, by the display of an appropriate notice on or near the roads carried by the existing bridge and within the existing toll plaza area,
prohibit the use of those roads by that vehicle or by vehicles of that description, either generally or unless such requirements as the appointed person may specify are complied with, if it appears to the appointed person that, having regard to any circumstances (including without prejudice to the generality of this paragraph weather conditions) prevailing or appearing to him likely to prevail, such use or, as the case may be, such use without the specified requirements being complied with is likely to be dangerous, unsafe or to cause injury or damage to persons or property or to delay other traffic.
(2) Where under paragraph (1) the use of the road carried by the existing bridge and the road within the existing toll plaza area by a particular vehicle or by vehicles of a particular description is prohibited, whether generally or unless specified requirements are complied with, no person shall cause or permit the vehicle or a vehicle of that description to be driven on those roads or, as the case may be, to be driven on those roads without the specified requirements being complied with, until he has been informed orally by an appointed person in uniform or by the display of a notice that the prohibition has been lifted.