(a) No operator of a motor vehicle, other than a tractor-trailer unit, as defined in section 14-1, shall proceed into an intersection that has been designated, posted and marked by a municipality in accordance with subsection (b) of this section, except when making a turn, unless there is sufficient space on the opposite side of the intersection to accommodate such motor vehicle without obstructing the passage of other vehicles or pedestrians, notwithstanding the indication of a traffic control signal that would permit such operator to proceed into the intersection.

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(b) Any municipality may, by ordinance, designate one or more intersections within that municipality to which the provisions of subsection (a) of this section shall apply. The municipality shall (1) post signs at each such designated intersection indicating that blocking the intersection is prohibited and violators are subject to a fine, and (2) mark, in white paint, the boundary of such intersection with a line not less than one foot in width and the area within such boundary line with parallel diagonal lines not less than one foot in width.

(c) Any person who violates the provisions of subsection (a) of this section shall have committed an infraction.