161 Train Sheet
American Association of Railroads (AAR) · X12 008010
American Association of Railroads (AAR)’s published 161 specification, rendered as an interactive guide. Expand any segment to see its elements, data types, lengths and accepted codes — then validate your own document against it below.
Specification
16 of 16 segments
HEADING
ST
Transaction Set Header ST
pos 0100
Optional
max —
BTS
Beginning Segment For Train Sheets BTS
pos 0200
Required
max —
V9
Event Detail Anticipated Pickupvariant 1 of 9
• Tenant sends to Host
• Send any time after the EDI 824 is accepted (TA) by the host carrier.
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max —
V9
Event Detail Anticipated Set-outvariant 2 of 9
• Tenant sends to Host
• Send any time after the EDI 824 is accepted (TA) by the host carrier.
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max —
V9
Event Detail Crew Callvariant 3 of 9
• Tenant sends to Host
• Send any time after the EDI 824 is accepted (TA) by the host carrier.
• Must be sent before trains arriving at trackage origin station.
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max —
V9
Event Detail Estimated Departure Datevariant 4 of 9
• Send any time after the EDI 824 is accepted (TA) by the host carrier. Only send when time deviates by
at least 10 minutes.
• Must be sent before trains arrival at trackage origin station.
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max —
V9
Event Detail Mutually Definedvariant 5 of 9
• Mutually defined between tenant and host carrier
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max —
V9
Event Detail Scheduled Departure Datevariant 6 of 9
• Tenant sends to Host
• Send up to 48 hours before the tenant train arrives at the trackage origin station.
• Equipment counts, as well as weights and train lengths, must be sent if available
pos 0230
Optional
max 100
V9
Event Detail Train Move Departurevariant 7 of 9
*at the trackage origin SPLC (If the tenant carrier owns the control point).
pos 0230
Optional
max —
V9
Event Detail Train Reported Passingvariant 8 of 9
*at the trackage origin SPLC (If the tenant carrier owns the control point).
pos 0230
Optional
max —
V9
Event Detail Train Annulmentvariant 9 of 9
• Tenant sends to Host
• Send any time after the EDI 824 is accepted (TA) by the host carrier. Only send when time deviates by
at least 10 minutes.
• Must be sent before trains arriving at trackage origin station.
pos 0230
Optional
max —
H3
Special Handling Instructions H3
H3 Special Handling Instructions Segment
H3 segment is optional. Send to notify Host carrier of special handling or train restrictions. The H3 segment
should be sent with the EDI 161 V901 SDD and CCT event codes when special conditions exist.
pos 0270
Optional
max 5
FAC
Facing Direction FAC
Send when Locomotive assigned. One occurrence per locomotive up to 25.
pos 0300
Optional
max 25
NM1 Loop
NM1
Individual Or Organizational Name NM1
pos 0500
Required
max —
DTM
Date Time Reference DTM
DTM segment must occur twice following each NM1
pos 0600
Required
max 3
SE
Transaction Set Trailer SE
pos 0700
Optional
max —
Validate a 161
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