Difference between revisions of "TD"

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The Train Describer feed provides low-level detail about the position of trains and their train reporting number through a network of berths.  Usually, but not always, a berth is associated with a signal - but there are locations (such as terminal platforms at stations) where there may be more than one berth.  From each berth, there are zero or more other berths which a train description may step in to.  A step between berths represents movement of the train from one berth to another.  Some of these steps may be one-way, some may be two-way.
 
The Train Describer feed provides low-level detail about the position of trains and their train reporting number through a network of berths.  Usually, but not always, a berth is associated with a signal - but there are locations (such as terminal platforms at stations) where there may be more than one berth.  From each berth, there are zero or more other berths which a train description may step in to.  A step between berths represents movement of the train from one berth to another.  Some of these steps may be one-way, some may be two-way.
  
To access the TD data feed, you must select and subscribe to the appropriate geographical topic(s) on the ''My Feeds'' page on the Data Feeds website (see the [[About_the_feeds|about the feeds]] page.
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To access the TD data feed, you must select and subscribe to the appropriate geographical topic(s) on the ''My Feeds'' page on the Data Feeds website (see the [[About_the_feeds|about the feeds]] page.)
  
 
See also the [[List_of_Train_Describers|list of train describers]] page.
 
See also the [[List_of_Train_Describers|list of train describers]] page.

Revision as of 18:15, 23 May 2013

The Train Describer feed provides low-level detail about the position of trains and their train reporting number through a network of berths. Usually, but not always, a berth is associated with a signal - but there are locations (such as terminal platforms at stations) where there may be more than one berth. From each berth, there are zero or more other berths which a train description may step in to. A step between berths represents movement of the train from one berth to another. Some of these steps may be one-way, some may be two-way.

To access the TD data feed, you must select and subscribe to the appropriate geographical topic(s) on the My Feeds page on the Data Feeds website (see the about the feeds page.)

See also the list of train describers page.

Topics

ActiveMQ topics are provided for signalling in specific geographic areas, as well as a topic representing all TD data in the country.

Topic Description
TD_ALL_SIG_AREA All signalling areas
TD_SE_SIG_AREA Scotland - East
TD_SW_SIG_AREA Scotland - West
TD_LNE_NE_SIG_AREA London North Eastern - North East
TD_MC_EM_SIG_AREA Midlands & Continental - East Midlands
TD_LNE_GN_SIG_AREA London North Eastern - Great Northern
TD_LNW_LC_SIG_AREA London North Western - Lancashire and Cumbria
TD_LNW_C_SIG_AREA London North Western - Central
TD_WCS_SIG_AREA West Coast - South
TD_ANG_SIG_AREA Anglia
TD_KENT_MCC_SIG_AREA Kent and Midlands & Continental
TD_SUSS_SIG_AREA Sussex
TD_WESS_SIG_AREA Wessex
TD_WTV_SIG_AREA Western - Thames Valley
TD_WWC_SIG_AREA Western - West Country
TD_WWM_SIG_AREA Western Wales and Marches

Message types

The Train Describer feed has seven message types, split into two classes. See individual pages for further details.