They are the most disputed and least collected invoices in trucking, because they arrive after the quote, depend on times nobody wrote down, and are small enough that AP sets them aside. They become collectible when the terms were on the rate confirmation, the proof was captured at the time, and the invoice is followed up on a schedule.
Glossary
Accessorial charges
Also: accessorials · detention · layover · TONU
Accessorial charges are freight fees beyond the base line-haul rate for extra services or delays: detention (waiting beyond free time), layover, truck ordered not used, lumper fees, redelivery, and similar.
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