(1)
The Commissioner may, whilst any such work as aforesaid or any work which may lawfully be executed in any street is in progress, direct that the said street shall be wholly or partially closed for traffic or for traffic of such description as he shall think fit; and shall set up in a conspicuous position an order prohibiting traffic to the extent so directed, and fix such bars, chains or posts across or in the street as he shall think proper for preventing or restricting traffic therein.
(2)
No person shall, without the permission of the Commissioner or without the lawful authority, remove any bar, chain or post so fixed or infringe any order prohibiting traffic so set up.