It’s logical for #PTV load surveys to exclude cancelled services
…documents obtained by the Greens through freedom of information reveal that the positive results did not include many trains that were affected by the knock-on effect of a cancelled or delayed service. Of the 437 trains surveyed, 113 were excluded.
– The Age, Train overcrowding getting worse: Greens
Here’s the thing. Load surveys aren’t measuring overcrowding for the sake of measuring overcrowding.
You don’t hire scores of people to stand on platforms with clipboards to learn that cancellations are bad because they result in crowded trains, and we should avoid cancelling services. That is obvious.
Load surveys are for designing new timetables, to identify where and when extra trains should run. So while some may disagree, I think it’s perfectly sensible for them to exclude cancellations. To not do so would make it impossible to know where services should be added.
By all means they could publish the raw figures, or a version that does include cancellations, but for the primary purpose — service planning — they have to be excluded.