N.J. Stat. § 39:6-30
Security deposited in compliance with the requirements of this act shall be applicable only to the payment of a judgment or judgments rendered against the person or persons on whose behalf the deposit was made, for damages arising out of the accident in question in a civil action, begun not later than 1 year after the date of such accident, or within 1 year after the date of deposit of any security under subparagraph (c) of section 5 of this act, or to the payment in settlement, agreed to by the depositor, of a claim or claims arising out of such accident or to the reimbursement of the Unsatisfied Claim and Judgment Fund for the payment of personal injury protection benefits pursuant to section 7 or section 10 of P.L., c. (Assembly Bill No. 803 presently pending in the Legislature). Such deposit or any balance thereof shall be returned to the depositor or his personal representative when evidence satisfactory to the director has been filed with him that there has been a release from liability, or a final adjudication of nonliability, or a duly acknowledged agreement in accordance with subparagraph (d) of section 4 of this act, and in the event of an accident involving an automobile required to have coverage for personal injury protection benefits pursuant to P.L. 1972, c. 70, if the depositor has also met the additional requirements of section 4(d) of P.L. 1952, c. 173 (C. 39:6-26) pertaining to such automobile or whenever, after the expiration of 1 year (1) from the date of the accident, or (2) from the date of any security under subparagraph (c) of section 5 of this act, the director shall be given reasonable evidence that there is no such action pending and no judgment rendered in such action left unpaid and no amount in reimbursement, to the Unsatisfied Claim and Judgment Fund for payment of personal injury protection benefits, remains unpaid by such person.
N.J.S. § 39:6-30