23.—(1) The promoter may, if it considers it necessary or expedient in consequence of any works executed or proposed to be executed in a street along which the authorised street tramway is constructed—
(a)remove or discontinue the operation of the authorised street tramway; and
(b)lay, maintain and operate in that street or in a street near to that street a temporary street tramway in place of the authorised street tramway.
(2) The powers conferred by this article may only be exercised with the consent of the street authority but such consent shall not be unreasonably withheld.
(3) The provisions of articles 8(2) (power to alter layout, etc., of streets), 9 (power to keep apparatus in streets), 10 (power to execute street works) and 49 (traffic signs) shall apply in relation to temporary street tramways laid under this article as they apply in relation to the authorised street tramway.