Occurrence counter

Prefix or alphabetic part of an equipment unit's identifying number

Sequencing or serial part of an equipment unit's identifying number (pure numeric form for equipment number is preferred)

Code indicating the direction the equipment is entrained or the lading is loaded; When used to indicate the lading orientation, direction is defined relative to the equipment on which it is loaded

Relative position of shipment in car, trailer, or container (mutually defined)

Code indicating the status of an Automatic Equipment Identification Tag