N.J. Stat. § 13:20-22
The municipal master plan and development regulations of any municipality, and the county master plan and associated regulations of any county, located in the Highlands Region which have been approved by the council to be in conformance with the regional master plan in accordance with section 14 or 15 of this act shall be entitled to a strong presumption of validity. In any cause of action filed against such a local government unit and contesting an act or decision of the local government unit taken or made under authority granted pursuant to the "Municipal Land Use Law," P.L. 1975, c.291 (C.40:55D-1 et seq.), R.S. 40:27-1 et seq., the "State Uniform Construction Code Act," P.L. 1975, c.217 (C.52:27D-119 et seq.), or this act, the court shall give extraordinary deference to the local government unit, provided that the municipal master plan and development regulations, or, in the case of a county governmental entity, the county master plan and associated regulations, have been approved by the council to be in conformance with the regional master plan in accordance with section 14 or 15 of this act. The plaintiff shall have the burden of proof to demonstrate by clear and convincing evidence that the act or decision of any such local government unit was arbitrary, capricious, or unreasonable or in patent abuse of discretion.
N.J.S. § 13:20-22