IS1 Beginning Segment for Estimated Time of Arrival and Car Scheduling

To transmit basic data relating to car scheduling information

Position: IS1-01 · Element: 353 · Name: Transaction Set Purpose Code · Type: Identifier (ID) · Requirement: Mandatory · Min: 2 · Max: 2 · Repeat: -

Code identifying purpose of transaction set.

Position: IS1-02 · Element: 206 · Name: Equipment Initial · Type: String (AN) · Requirement: Mandatory · Min: 1 · Max: 4 · Repeat: -

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

IS102 and IS103 is the car number and initial for carload shipments and the container/trailer number for Trailer on Freight Car (TOFC) or Container on Freight Car (COFC) intermodal shipments.

Position: IS1-03 · Element: 207 · Name: Equipment Number · Type: String (AN) · Requirement: Mandatory · Min: 1 · Max: 10 · Repeat: -

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

Position: IS1-04 · Element: 322 · Name: Load/Empty Status Code · Type: Identifier (ID) · Requirement: Mandatory · Min: 1 · Max: 1 · Repeat: -

Code which specifies the loaded condition of transportation equipment.