TRUST train ID
Also: train_id, trust id
A ten-character ID TRUST gives a train for the day, with its headcode inside.
Example
52
5M38
19
31
When a train is activated in TRUST, it gets a ten-character ID that every report about it carries until it finishes.
The first two digits come from where it starts, the middle four are its headcode, and the last two are the day of the month it started. In between sit two of TRUST’s own codes.