(a) A judgment debtor upon due notice to the judgment creditor may apply to the court in which such judgment was rendered for the privilege of paying such judgment in installments and the court, in its discretion and without prejudice to any other legal remedies which the judgment creditor may have, may so order and fix the amounts and times of payment of the installments. (b) The Mayor shall not suspend a license, registration, or nonresident’s operating privilege, and shall restore any license, registration, or nonresident’s operating privilege suspended following nonpayment of a judgment, when the judgment debtor gives proof of financial responsibility and obtains such an order permitting the payment of such judgment in installments, and while the payment of any said installments is not in default.