(a) Whenever, during any period of twenty-four hours or less, snow falls in the City, or in any section thereof, to a depth of two inches or more, an emergency is declared to exist in that such a depth of snow constitutes a serious public hazard, impairing transportation, movement of food, fuel and other supplies, medical care, fire, health, and police protection and other vital facilities of the City.
(b) The Mayor, the Safety Director or the Chief of Police shall make a reasonable effort to announce the existence of the emergency by use of local press, and radio and television stations. Such emergency shall continue until an announcement by the Mayor, Safety Director or Chief of Police that snow plowing operations have been completed and that the emergency is terminated. However, owners and operators of motor vehicles shall have the responsibility of determining existing weather conditions and depth or extent of snow fall, and of complying with emergency parking regulations when such emergency is in effect.
(c) It shall be required for the purposes of enforcement of the snow parking ban that there shall be posted on all main approaches to the City and other main arteries as designed by the Safety Director or the Chief of Police, signs, which signs shall indicate the prohibition of parking on such streets and also indicate that a penalty shall be assessed for violation.
(d) During the period of the emergency, parking of vehicles shall be prohibited on all the City streets. During such emergency no person shall park or cause to be parked, or permit to be parked, or abandon or leave unattended any motor vehicle of any kind or description on any of the City's streets or roads. However, vehicles may be parked for a period of not longer than three minutes for the actual loading or unloading of passengers, or thirty minutes for the actual loading or unloading of property or goods, provided that the operator of the vehicles is immediately available, and provided, further, that no other ordinance restricting parking as to time or place is violated.