Informed Sources Roger Ford
What should the threshold be for promotion from the table of truth?
Time for some housekeeping and a review of what TIN-watch is about and future policy.
First of all, the admin. The data used in TIN-watch is published every reporting period, while TIN-watch appears monthly.
This means that each month the data arrives earlier in the ‘Informed Sources’ production cycle. Eventually the stage is reached where the data catches up with itself and I have two Periods’ worth of numbers. This is why this month the main table covers Period 12, with the MTIN MAA details for Period 11 in the righthand column for completeness.
CRITERIA
TIN-watch first appeared in the February 2018 Modern Railways. There were just four fleets in hat table – Classes 345, 700, 707 and 800. Naively, in retrospect, I expected these new trains with their remote fault monitoring, Train Management Systems and maintained by their manufacturers in shiny new depots to have the usual shaky start, but then disappear off down the bathtub curve.
On this basis I selected 50,000 MTIN as the basis for promotion from the reception class to big school. With two exceptions (take a bow Hitachi and Siemens), this hasn’t happened.
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