(1) In the exercise of a function under this Division, an authorised officer must do as little damage as possible.(2) The roads authority must provide, if necessary, other means of access in place of any taken away or interrupted by an authorised officer.(3) As far as practicable, entry on to fenced land is to be made through an existing opening in the enclosing fence or, if entry by that means is not practicable, through a new opening in the enclosing fence.(4) Any new opening is to be properly closed when the need for entry ceases.(5) If, in the exercise of a function under this Division, any pit, trench, hole or bore is made, the roads authority must, if the owner or occupier of the premises so requires:(a) fence it and keep it securely fenced so long as it remains open or not sufficiently sloped down, and(b) without unnecessary delay, fill it up or level it or sufficiently slope it down.