Train Movement

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Revision as of 21:58, 24 July 2012 by BarryCarlyon (talk | contribs) (→‎Overview: linked STANOX)

Overview

The Train Movement message is used to indicate a train has passed a particular reporting point, indicated by the reporting_stanox field. The STANOX may represent a station or junction.

Example

   "header":
   {
       msg_type:"0003",
       source_dev_id:"",
       user_id:"",
       original_data_source:"SMART",
       msg_queue_timestamp:"1341391532000",
       source_system_id:"TRUST"
   },
   "body":
   {
       event_type:"DEPARTURE",
       gbtt_timestamp:"",
       original_loc_stanox:"",
       planned_timestamp:"1341393780000",
       timetable_variation:"22",
       original_loc_timestamp:"",
       current_train_id:"",
       delay_monitoring_point:"true",
       next_report_run_time:"1",
       reporting_stanox:"52701",
       actual_timestamp:"1341395100000",
       correction_ind:"false",
       event_source:"AUTOMATIC",
       train_file_address:,platform:"",
       division_code:"21",
       train_terminated:"false",
       train_id:"521N16ME04",
       offroute_ind:"false",
       variation_status:"LATE",
       train_service_code:"21939001",
       toc_id:"21",
       loc_stanox:"52701",
       auto_expected:"true",
       direction_ind:"DOWN",
       route:"1",
       planned_event_type:"DEPARTURE",
       next_report_stanox:"52226",
       line_ind:"M"
   }

The fields of main significance are:

Field Value Explanation
event_type DEPARTURE the train has departed the STANOX reported
planned_timestamp 1341393780000 The time the train should have departed the STANOX ( 09:23:00 )
actual_timestamp 1341395100000 The time the train actually departed the STANOX ( 09:45:00 )
train_id 521N16ME04 train header code. provides a unique identifier for this journey. Digits 3-6 indicate the route, which can be looked up in the timetable data (1N16 - In this case may have been Liverpool Street -Clacton-on-Sea )
reporting_stanox 52701 The location of the train when the message occured. (Bow Junction in this case)
next_report_stanox 52226 The next location where this train will report its location. (Stratford in this case)