I do not believe that we should separate out the Elizabeth line for the purposes of measuring the ridership recovery. Are we arguing that opening a new line represents moving the goalposts, and is somehow cheating?
Yet there are new bicycle lanes opened all the time and we don’t regard it as cheating to include riders who use the new infrastructure in national travel statistics. Similarly we don’t measure air travel in the absence of Heathrow’s terminal 5 just because it’s comparatively big and new and it’s inclusion in passenger figures would thus be unsporting.
Part of the reason for separating it out was the significant number of short trips undertaken in it, which is you compared km increases with trip increases significantly skewed the data to imply that trips were up by 45% whist km was only up by 30%.
Which would imply that there's a LOT of splitting of tickets, when in reality no one would split their travel on the Elizabeth Line yet that was where a lot of short trips were made.
I was also mindful that the Elizabeth Line had been where there's been a lot of growth, so by highlighting that from Q2 to Q2 growth excluding it was still up by about 1/3 indicates that it's not only the Elizabeth Line which has seen some fairly good growth over that period.
It's unlikely to continue at that rate of growth, however even almost no change between Q2 to Q3 would likely mean a reasonable rate of growth when comparing Q3 with Q3. Whilst the data isn't publicly available, the Covid data doors indicate that Q3 is likely to be similar to Q2 in useage. If it wasn't for the strikes around Christmas it would have likely been higher.
Whilst the start of Q4 (other than the strike days) the usage is looking fairly reasonable, with a fair chance of increased use over Q2 or Q3 and certainly over the previous Q4.