(A) It shall be unlawful to operate any vehicle upon any street or alley within this Village at a speed in excess of that permitted by the provisions of this Code or applicable statute of the State of Illinois;
(B) Appropriate signs shall be posted by the Chief of Police or other person designated by the Board of Trustees showing the speed limits on the streets and alleys within the Village;
(C) The fact that the speed of a vehicle does not exceed the applicable maximum speed limit does not relieve the driver from the duty to decrease speed when approaching and crossing an intersection, when approaching and going around a curve, when approaching a hill crest, when traveling upon any narrow or winding roadway or when special hazards exist with respect to pedestrians or other traffic by reason of weather or highway conditions; and speed shall be decreased as may be necessary to avoid colliding with any person or vehicle on or entering the highway in compliance with legal requirements and the duty of all persons to use due care.