The governing body of the local unit shall determine the period of usefulness of any purpose according to its reasonable life computed from the date of the bonds, which period shall not be greater than the following:
Class A: A building, of which all walls, floors, partitions, stairs and roof are wholly of incombustible material, except the window frames, doors, top flooring and wooden handrails on the stairs, 40 years;
Class B: A building, the outer walls of which are wholly of incombustible material, except the window frames and doors, 30 years;
Class C: A building which does not meet the requirements of Class A or Class B, 20 years.
Class A: Rigid pavement. A pavement of not less than eight inches of cement concrete or a six-inch cement concrete base with not less than three-inch bituminous concrete surface course, or equivalent wearing surface, 20 years.
Flexible pavement. A pavement not less than 10 inches in depth consisting of five-inch macadam base, three-inch modified penetration macadam and three-inch bituminous concrete surface course or other pavements of equivalent strength, in accordance with the findings of the American Association of State Highway Officials (AASHO) Road Test, 20 years.
Class B: Mixed surface-treated road. An eight-inch surface of gravel, stone or other selected material under partial control mixed with cement or lime and fly ash, six inches in compacted thickness with bituminous surface treatment and cover, 10 years.
Bituminous penetration road. A five-inch gravel or stone base course and a three-inch course bound with a bituminous or equivalent binder, 10 years.
Class C: Mixed bituminous road. An eight-inch surface of gravel, stone, or other selected material under partial control mixed with bituminous material one inch or more in compacted thickness, five years.
Penetration macadam road. A road of sand, gravel or water-bound macadam, or surfacing with penetration macadam, five years.
The period of usefulness in this subsection shall apply to construction and reconstruction of streets and thoroughfares.
"Alternative fuel automotive vehicle" means any passenger car, station wagon, or other motor vehicle that is not solely propelled by gasoline or diesel fuel.
"Electric vehicle" means any passenger car, station wagon, or other motor vehicle that is propelled solely by an electric motor or energy storage device.
"Gross vehicle weight rating" or "GVWR" means the value specified by the manufacturer as the loaded weight of a single or combination (articulated) vehicle. The GVWR of a combination (articulated) vehicle, commonly referred to as the "gross combination weight rating" or "GCWR," is the GVWR of the power unit plus the GVWR of the towed unit or units.
"Hydrogen fuel cell vehicle" means any passenger car, station wagon, or other motor vehicle that is propelled by power derived from one or more cells that convert chemical energy directly into electricity by combining oxygen with hydrogen fuel.
"Plug-in hybrid vehicle" means any passenger car, station wagon, or other motor vehicle that can be charged from a source of electricity external to the vehicle through an electric plug, but which is not solely powered by electricity.
N.J.S. § 40A:2-22