Paragraph 33
Without prejudice to the generality of paragraphs 31 and 32 above a protected person may, in approving the plans of or in supervising the carrying out of the specified works or of any protective works carried out by the undertaker by virtue of the provisions of paragraph 31(3) above, require that—
nothing shall be done by or on behalf of the undertaker which unreasonably impedes the free, uninterrupted and safe flow of passengers or customers;
dust sheets and other works and working methods are used so as to prevent so far as practicable any dust or dirt from the relevant works affecting such persons; and
adequate signing of all alterations of routes for such persons and of any hazards or obstructions to the free movement of such persons is provided.