(a) Subject to approval of the board of trustees, the village manager may designate certain streets or portions thereof as through streets and shall cause to be erected and maintained an appropriate stop sign on each intersecting such through streets.
(b) The village manager may designate street intersections in addition to the intersections of through streets as dangerous or hazardous intersections and shall cause a stop sign or "yield right-of-way" sign to be erected and maintained at each such dangerous or hazardous intersection.