The process of locating a specific railcar by querying the railroad's information system or the industry-wide Railinc car location network. Car traces provide current location, status, and estimated arrival information. Shippers use car traces to plan unloading schedules and manage inventory.
The predicted date and time at which a railcar or intermodal shipment is expected to arrive at its destination, based on current location, train plan, and historical performance data. ETAs are published through railroad customer portals and EDI transactions. Predictive ETA models increasingly use machine learning to improve accuracy.
The computer-to-computer exchange of standardized business documents between railroads, shippers, and logistics providers using ANSI X12 transaction sets. Common rail EDI transactions include the 404 (rail shipment), 410 (freight invoice), 417 (rate inquiry), and 418 (rate reply). EDI is the foundational data exchange standard for the North American rail industry.
The AAR-affiliated technology company that provides information technology services and data standards for the North American rail industry, including the UMLER equipment registry, the Centralized Station Master location database, Jettison EDI translation, and the car location network. Railinc is the central data utility connecting railroads, shippers, and service providers. It maintains the authoritative registry of rail equipment and industry codes.
A system of passive RFID tags mounted on every railcar and locomotive and read by wayside readers at strategic locations throughout the network, automatically recording the car number, direction, and time of passage. AEI data is the backbone of real-time car location and train tracking for both operational and customer visibility purposes. The system was mandated by the FRA and deployed network-wide in the 1990s.
An internal railroad document derived from the bill of lading that travels with or ahead of a car and contains all information needed to route, classify, and deliver the shipment. The waybill is the operational document used by railroad employees to handle a car through the system. It may be electronic in modern railroad IT systems.