Can anyone translate the two-letter codes at the end of the reasons (TO & MB)? My understanding is that TO is usually some kind of operator error, for example?
I hope at least one toilet stop was allowed on those trains above without toilets!!
The delay cause codes are listed in the tables in section 5 of "
Delay Attribution Principles and Rules".
For the more general ones, the words displayed with them convey the definition pretty well. Some are more specific, though. The tables make the attribution to one (or more) organisation explicit in most cases, or else say how this is to be decided.
The list of first letters, indicating classes of causes by responsibility, is:
A - FREIGHT TERMINAL OPERATING CAUSES
D – HOLDING CODES
F - FREIGHT OPERATING CAUSES
I - INFRASTRUCTURE CAUSES
J - FURTHER INFRASTRUCTURE CAUSES
M - MECHANICAL OR FLEET ENGINEER CAUSES
N –OTHER MECHANICAL OR FLEET ENGINEER CAUSES
O - NETWORK RAIL OPERATING CAUSES
P - PLANNED OR EXCLUDED DELAYS OR CANCELLATIONS
Q - NETWORK RAIL NON-OPERATING CAUSES
R - STATION OPERATING CAUSES
T - PASSENGER OPERATING CAUSES
V – EXTERNAL EVENTS – TOC▸ RESPONSIBILITY
X - EXTERNAL EVENTS - NETWORK RAIL
Y - REACTIONARY DELAYS
Z - UNEXPLAINED DELAYS AND CANCELLATIONS
MB is: Electric loco failure, defect, attention. [ELEC LOCO]
TO is: Time lost en-route believed to be Operator cause and information required from Operator (Ops Responsibility) [LIR UNEX]
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