(A) Commercial vehicles having a gross weight or gross vehicle weight rating of more than 16,500 pounds shall not be parked on any premises having an area of less than one acre and width of less than 130 feet in any agricultural or residential zoning district, except for construction equipment when actively engaged in legal construction work on the premises, for more than two days in any calendar week except within a fully enclosed building, provided that a tank vehicle used in the transportation of flammable or hazardous material of a type or quantity requiring vehicle placarding shall not be parked on any such property at any time.
(B) Residents owning commercial vehicles on September 30, 1996 shall not be required to conform to the parking provisions of this section for their place of residency on September 30, 1996 for the duration that the resident owns a commercial vehicle or any replacement therefore, provided that no nonconformity shall be created; no exception is permitted for more than two such vehicles; and a surface conforming to this Code shall be provided for the vehicles. This exemption shall be terminated if the nonconformity is discontinued or ownership is terminated for a period of one year, or upon cessation of residency at said premises.