DelayometerLondon rail, measured

Live measured status

Piccadilly line status

Severe delayTfL: Part Closure

Severely delayed — about 12 min longer than usual

TfL’s reason: PICCADILLY LINE: Saturday 19 September, from 0130 and all day Sunday 20 September, including Night Tube, no service between Hyde Park Corner and Acton Town. Replacement buses operate. Use ELIZABETH LINE trains for travel between Central London and Heathrow.

Score17out of 100
Added to a journey12 min 30send to end, versus normal
Waiting longer by12 min 30sper train, on average
Running slower by0sper section, on average
Sections scored89of 104 on the line
Confidencehighfrom waiting times and train speeds

Live — last reading .

The last 24 hours

Fri 18 Sept 23:10:00 → 23:00:00

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 34 hours TfL declared a good service while we were measuring a real delay; and for 9 hours 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

17

Severe delay

Severely delayed — about 14 min longer than usual

Away from central London

18

Severe delay

Severely delayed — about 12 min longer than usual

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.

Slowest sections right now

Worst first

CockfostersOakwood0
SouthgateArnos Grove0
Arnos GroveBounds Green0
Bounds GreenWood Green0
Wood GreenTurnpike Lane0
Caledonian RoadKing's Cross St. Pancras0

Sections are scored on their own, so a line can be fine end to end and still have one stretch that is not. Only measured sections appear here.

Every other line

How this is measured →