N.J. Stat. Ann. § 39:8-2.3

In addition to the powers now vested in the Director of the Division of Motor Vehicles under section 39:8-2 of the Revised Statutes for the acquisition of property by the power of eminent domain, the Director, upon or after exercising the right of condemnation by instituting an action in the Superior Court in the manner provided by chapter 1 of Title 20 of the Revised Statutes, may in advance of making compensation therefor take immediate possession of and occupy, use and improve the property, notwithstanding any other law.