Width of streets and levelling etc.. thereof —(1) No strect laid out

or altered by the Board shall be less than forty feet wide, if it is intend- ed for carriage tiaffic, or less than twenty feet wide, if it is intended for pedestrian traffic only:

Provided that—

1. (i) the width of an existing street need not be increased to the minimum required by this sub-section if, in the opinion of the Board, such increase is impracticable;
2. (ii) nothing in this sub-section shall apply to service passages for sanitary purposes.

1. (2) In every street laid out or altered by the Board, the Board shall make provision for the levelling, paving, metalling, flagging, channelling, sewering and draining of the street, and the provision therein of lighting, water and other sanitary conveniences ordinarily provided in a municipality. Z