DelayometerLondon rail, measured

Live measured status

Elizabeth line status

Minor delayTfL: Good Service

Delays on part of the line

Score48out of 100
Added to a journey0send to end, versus normal
Waiting longer by0sper train, on average
Running slower by0sper section, on average
Sections scored74of 84 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 31 hours TfL declared a good service while we were measuring a real delay; and for 28 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

46

Minor delay

Delays on part of the line

Away from central London

67

Minor delay

Delays on part of the line

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

HanwellWest Ealing0
Stratford (London)Maryland0
Heathrow Terminal 5Heathrow Terminals 2 & 30
MaidenheadTaplow0
TaplowBurnham (Berks)0
Burnham (Berks)Slough0

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 →