4.—(1) In the case of a street which is not a road and which the street managers have no liability to the public to maintain or repair, the undertaker may give the street managers a notice stating—
(a)the general effect of the works proposed or, as the case may be, of the emergency works executed, and
(b)that it is a notice given for the purposes of this paragraph.
(2) Where such a notice is given paragraphs 2 and 3 do not apply if the street managers do not, within 10 working days from the date on which the notice was given to them, give notice to the undertaker requiring the submission or furnishing of a plan and section to them.