Rail carriers and freight railroads use the X12 426 Rail Revenue Waybill to document and communicate shipment details for freight transported by rail. The carrier sends this transaction set to billing entities, freight forwarders, shippers, and other trading partners as a record of the rail movement and associated charges. Key segments include the ZR (Waybill Reference Identification) segment, which establishes the unique identifier for the waybill; the N7 segment (Equipment Details), which specifies the rail cars involved; and the F9 and D9 segments (Origin Station and Destination Station), which define the shipment’s routing endpoints. The transaction also captures equipment serial numbers, seal information, charges, and route details through its nested loop structure, enabling accurate billing and shipment tracking throughout the rail network.

Consider a scenario where Midwest Steel Mills ships 500 tons of coiled steel from their facility in Chicago to an automotive manufacturer in Detroit via a major freight railroad. The railroad’s revenue department generates a 426 transaction set to document the shipment, specifying the waybill number in the ZR segment, the five freight cars assigned in the N7 loops with their car numbers and seal identifiers in the M7 segment, the Chicago origin and Detroit destination in the F9 and D9 segments, the applicable freight rates and charges in the R2 and L1 segments, and routing information through intermediate rail junctions. The transaction is sent electronically to both the automotive buyer’s accounts payable department for invoice reconciliation and to Midwest Steel Mills’ freight accounting system for cost allocation, ensuring all parties have a consistent, standardized record of the shipment.