Train Cancellation

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A cancellation message is sent when the train does not, or will not, complete its scheduled journey.

A train may be cancelled in one of four ways:

  • At activation time ("ON CALL"), usually where the applicable schedule has a STP indicator of "C" - see Planned Cancellations. Trains may be cancelled for other reasons before train has been activated, and when activation occurs, the train will be immediately cancelled with the appropriate reason code
  • At the train's planned origin ("AT ORIGIN")
  • En-route ("EN ROUTE")
  • Off-route ("OUT OF PLAN")

As with all other messages, cancellation messages will only be received for train schedules which have already been activated.

Data structure

Header

Field Description
msg_type Set to '0002' for a cancellation message
source_dev_id Set to the device ID of the terminal that issued the request
source_system_id Set to "TRUST" for a cancellation message
original_data_source Set to "TOPS" or "SDR" for a reactionary cancellation, or "" for a planned cancellation (STP 'C')

Body

Field Description
train_file_address The TOPS train file address, if applicable
train_service_code Train service code as per the schedule
orig_loc_stanox For an an "OUT OF PLAN" cancellation, this is the location that the train should have been at according to the schedule
toc_id Operating company ID as per TOC Codes
dep_timestamp The departure time at the location that the train is cancelled from (in milliseconds since the UNIX epoch)
division_code Operating company ID as per TOC Codes
loc_stanox The STANOX of the location that the train is being cancelled from. For an "OUT OF PLAN" cancellation, this STANOX will not be in the schedule, but a Train Movement message will have already been sent.
canx_timestamp The time at which the cancellation was input to TRUST
canx_reason_code The reason code for the cancellation, taken from the Delay Attribution Guide
train_id The 10-character unique identity for this train (sent in the TRUST activation message)
orig_loc_timestamp For an "OUT OF PLAN" cancellation, this is the departure time of the location that the train should have been at according to the schedule
canx_type Either "ON CALL" for a planned cancellation, "AT ORIGIN", "EN ROUTE" or "OUT OF PLAN"


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RTPPM RTPPM Feed
Train Movements Train Movements Feed Train Activation Train Cancellation Train Movement Train Reinstatement Change of Origin Change of Identity TSPEED Field Planned Cancellations Cancellation Codes
TD TD Feed C-Class Messages S-Class Messages Train Describers TD Berths
VSTP VSTP Feed
TSR TSR Feed Route Codes
SCHEDULE SCHEDULE Feed Schedule and Location Records Association Records CIF Codes How Scheduling Works Allowances
Reference Data Reference Data Feed TOC Codes CIF Codes Delay Attribution Codes Identifying Locations (STANOX, TIPLOC, NLC and 3-Alpha Codes) STANOX Geographical Areas Train Planning data
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