N.J. Stat. Ann. § 54:29A-24.6

Notwithstanding any other provision of this act the valuation of Class II railroad property in each municipality used in the tax year 1966 for the purpose of determining equalized valuation for apportionment of the costs of county government, State school aid, and State school building aid and in establishing county debt limits shall continue to be used for such purposes with appropriate annual adjustment to reflect adjustments in base value as determined under section 21 of this act. The commissioner shall certify any such adjustments to the several county boards of taxation on or before December 10 for use by the county boards in determining equalized valuation for the foregoing purposes in the succeeding tax year.