A carrier may require the carrier's freightage to be paid upon the carrier's receiving the freight. If the carrier does not demand it then, the carrier cannot demand it until the carrier is ready to deliver the freight to the consignee.
N.D. Cent. Code § 8-05-01
When freightage to be paid
Official source: North Dakota Legislative Branch. Reproduced from public-domain North Dakota statutes; confirm against the official source for the current text. Not legal advice.