DelayometerLondon rail, measured

Live measured status

Central line status

MeasuringTfL: Minor Delays

We are not measuring the Central line yet. Baselines need weeks of data before a score means anything, and we would rather show nothing than a number we do not trust.

TfL’s reason: Central Line: Minor delays between North Acton and Ealing Broadway / West Ruislip, and between Leytonstone and Epping / Hainault (via Newbury Park) due to train cancellations. GOOD SERVICE on the rest of the line.

Scorenot measured
Added to a journeyend to end, versus normal
Waiting longer byper train, on average
Running slower byper section, on average
Sections scoredof 98 on the line
Confidencenonefrom nothing yet

Live — last reading .

The last 24 hours

Fri 18 Sept 21:10:00 → 21:05:00

Higher is better; the hairline is the threshold below which a line stops counting as running normally. A dashed stretch along the bottom is a period we have no score for, and it says which kind. No service is the small hours, when the line is not running. No data is us: either nothing reached us, or — more often — we had nothing to compare that stretch against, because a line TfL has declared disrupted for long enough loses those hours from what we count as normal. Neither is a delay, and we would rather show the hole than draw a line across it.

Declared against measured

Sat 12 Sept → Sat 19 Sept

  • Good
  • Minor delay
  • Delayed
  • Severe delay
  • Nothing measured, or nothing running

Across this window, for 2 days TfL declared a good service while we were measuring a real delay; and for 2 days TfL was reporting disruption that our measurements did not pick up, which is the direction we are likelier to be wrong in. Our band changes only once a condition has held for fifteen minutes, so this is a picture of sustained running rather than every flicker — the chart above is where a short sharp incident still shows. Every other page here asks you to take our word for it; this one is the argument with the evidence attached.

By direction

Towards central London

Measuring

No data

Away from central London

Measuring

No data

One direction can be in trouble while the other runs perfectly, which is exactly what a single line-wide status hides. Platform indicators name the destination rather than the direction — we will too, once the measurement service publishes where each direction ends.

Every other line

How this is measured →