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Revision as of 22:18, 16 January 2019 by PeterHicks (talk | contribs) (Add a note about TRAs being operator-centric, not geography-centric)
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In some TRUST messages, the Line And Terminal Address (LATA) of the inputting terminal is shown, usually when the event (movement or cancellation) is manually reported, or is reported through TOPS.

LATAs are in the format AANNNNN:

  • AA is a two-character string which indicates the type of terminal and its sequence number
  • NNNNN is the TOPS Responsibility Area (TRA) that the user is within

LATA types

Type Description
C Network Rail (Route Control)
D Network Rail
F Network Rail
J Freight Operating Company
K Freight Operating Company
L Network Rail
N Freight Operating Company
Q Network Rail
R Network Rail (Route Control)
W Interfaces to TOPS
X Area Freight Centre (AFC)


When TOPS was introduced, a TRA covered a geographical area. Since privatisation of the rail industry, TRAs are now operator-centric, rather than geography-centric.

STANOX Description
07360 Mossend Down Yard
15400 Tees New Yard
23430 Doncaster Up Decoy
23450 Doncaster ANG
23460 Doncaster Coal Yard
35550 Warrington Arpley Sidings
35560 Warrington EWS
35990 Warrington
42159 Crewe Basford Hall
42960 Crewe Parcels
52900 GB Railfreight
76470 Alexandra Dock
82100 Westbury Down Yard
82230 Westbury EWS
82240 Westbury Aggregates
89735 Dollands Moor