a.Any vehicle that has been parked or left standing upon a street or highway for 72 hours or more consecutive hours.

b.Any vehicle left standing or parked on any street, highway, parking lot, wharf or other public place when the City Council has by resolution declared the area to be a tow-away zone and signs giving notice thereof have been posted. The City Council may establish certain times of the day, and or days, when said tow-away zone will be enforced.

c.Any vehicle which is parked or left standing upon a street or highway where the use of such street or highway or a portion thereof is necessary for the cleaning, repair or construction of the street or highway or for the installation of underground utilities or where the use of the street or highway or any portion thereof is authorized for a purpose other than the normal flow of traffic or where the use of the street or highway or any portion thereof is necessary for the movement of equipment, articles or structures of unusual size, and the parking of such vehicle would prohibit or interfere with such use or movement; provided, that signs giving notice that such vehicle may be removed are erected or placed at least 24 hours prior to the removal.