Line Capacity Used statistics

[Bartsimho]

I remember seeing (I'm not sure where) a graphic showing the capacity used of the MML from St Pancras to Sheffield. This was dated 2010 but it showed that the southern end was around like 95% used while the northern end was around 20% used.
Does anyone know what the technical name of this is so I can see if there are any other ones for other mainlines or if any more up to date ones are available?

 

[zwk500]

The problem is putting a single number on it is an oversimplification of the problem. These numbers usually take 100% to mean every train running at the same speed, minimum headway apart, no stops (or all same stops). And that just never happens. It ignores the effect of junction margins, approach control, terminating short and platform capacity and so forth.

 

[Dr Hoo]

There used to be something called the Capacity Utilisation Index (CUI), sometimes spoken as "coo-ee" or "queue-ee". I think that it was produced by some organisation like AEA Technology or other part of the BR Derby Research diaspora. It took a lot of work (and money) to produce for each timetable run and could produce some counter-intuitive or not particularly illuminating results. E.g. Gunnislake Branch 'more congested' than Welwyn Viaduct and so on.

I think that it fell by the wayside when nobody would pay for it to be kept up to date.

 

[The Planner]

There used to be something called the Capacity Utilisation Index (CUI), sometimes spoken as "coo-ee" or "queue-ee". I think that it was produced by some organisation like AEA Technology or other part of the BR Derby Research diaspora. It took a lot of work (and money) to produce for each timetable run and could produce some counter-intuitive or not particularly illuminating results. E.g. Gunnislake Branch 'more congested' than Welwyn Viaduct and so on.

I think that it fell by the wayside when nobody would pay for it to be kept up to date.

People occasionally bring it back up to dispute timetable robustness etc, but as you say, its not a brilliant metric.