The Chairperson may at any time with the previous sanction of the Council,--
         (a) lay out and make new public streets;
         (b) construct bridges and sub-ways;
         (c) turn or divert any existing public street; and
         (d) lay down and determine the position and direction of a street or streets in any part of New Delhi notwithstanding that no proposal for the erection of any building in the vicinity has been received.