(3) Shipments of household goods.—
(A) In general.— A carrier providing transportation of a shipment of household goods shall give up possession of the household goods being transported at the destination upon payment of
(i) 100 percent of the charges contained in a binding estimate provided by the carrier;
(ii) not more than 110 percent of the charges contained in a nonbinding estimate provided by the carrier; or
(iii) in the case of a partial delivery of the shipment, the prorated percentage of the charges calculated in accordance with subparagraph (B).
(B) Calculation of prorated charges.—
For purposes of subparagraph (A)(iii), the prorated percentage of the charges shall be the percentage of the total charges due to the carrier as described in clause (i) or (ii) of subparagraph (A) that is equal to the percentage of the weight of that portion of the shipment delivered to the total weight of the shipment.
(C) Post-contract services.—
Subparagraph (A) does not apply to additional services requested by a shipper after the contract of service is executed that were not included in the estimate.
(D) Impracticable operations.—
Subparagraph (A) does not apply to impracticable operations, as defined by the applicable carrier tariff, except that the charges collected at delivery for such operations shall not exceed 15 percent of all other charges due at delivery. Any remaining charges due shall be paid within 30 days after the carrier presents its freight bill.