Section 17-4-51 - Same - Amendment or withdrawal of objections or preliminary determinations by commissioner; delegation of authority by commissioner(a) The state road commissioner may revise, amend or withdraw any objections issued by him and any preliminary determinations made by him under sections forty-seven, forty- eight, forty-nine or fifty of this article upon reasonable notice to the owner or owners of the property affected or to the person submitting a subdivision plan.(b) The commissioner may delegate the authority to make, revise, amend and withdraw objections and preliminary determinations and hold hearings required or authorized under this section and sections forty-seven, forty-eight, forty-nine and fifty of this article.