90 shortforms listed today (to be fair in amongst them are a couple of "long forms"!)
Is this a one off Saturday or a sign of things to come at weekends?
Could become troublesome, particularly on services to/from the South West if this continues into the summer. Let’s hope not.
I think it means rather less than you imagine. I noted a huge number of short (and long) formations (about 80, I think) on Monday 17th, but later this week I found none on occasions. Now, that wasn't due to a huge rise in stock availability, was it? Some recovery was to be expected, with a few extra units being checked and reassessed, and ways being found to get more of the standard plan to still work, but all off them? I can think of a more likely explanation.
First, what are these planned lengths? (I note that JourneyCheck's wording sneakily avoids labelling them as normal or anything else!) They are not in the timetable, and don't need to be fixed when the timetable is worked out (I think - except perhaps where a path imposes a limit of length less than some trains that operate). They must be in another part of the operations plan that is used, essentially, within the
TOC▸ .
So I reckon the sudden loss of short forms last week must mean that the reference "normal" lengths based on the modified operations plan (including the timetable, but also stock diagrams, staff rosters, and more) were loaded into whatever feeds JouneyCheck. And the reason we are back with about 80 of them again will mean that they haven't loaded these numbers for Saturday (yet).
Incidentally, I've always thought reporting train lengths this way was a bit odd, because the "normal" length isn't published anywhere. The information can still be useful, if you are a regular (even, in a few cases, one who remotely monitors train lengths on Tiger!), or if you assume the planned length matches demand. Of course it doesn't always, and if there's enough choice which unit to "borrow" then the shortened train may be the one that needs it least. But that's all guesses, and really for most of us it's a hint rather hint a clear guide.