11.—(1) The undertaker may, for the purposes of the authorised development, enter on so much of any of the streets as are within the Order limits and may—
(a)break up or open the street, or any sewer, drain or tunnel under it;
(b)tunnel or bore under the street;
(c)place apparatus in the street;
(d)maintain apparatus in the street or change its position; and
(e)execute any works required for, or incidental to, any works referred to in sub-paragraphs (a) to (d).
(2) The authority given by paragraph (1) is a statutory right for the purposes of sections 48(3) (streets, street works and undertakers) and 51(1) (prohibition of unauthorised street works) of the 1991 Act.
(3) Subject to article 12 (application of the 1991 Act), the provisions of sections 54 to 106 of the 1991 Act apply to any street works carried out under paragraph (1).