About TrackView

What TrackView shows, where the data comes from, and how to read it.

What it is

TrackView follows passenger and non-passenger services in real time: delays, calling points, platforms, formations and which units are working which trains. It keeps searchable history, timetables, fleet statistics and punctuality alongside.

TrackView is an independent information display, not an operator or timetable authority. Times can change at short notice, so always check with your operator before travelling.

Where to look

Coverage is focused on Wales: Transport for Wales services in depth, plus other operators' services that run into Wales.

How to read times and status

  • Live Running, with live data held for the service.
  • On time Running to schedule at the last recorded point.
  • +7m Running late by the minutes shown. The Timetable list shows this from five minutes late.
  • At station Currently recorded at a station.
  • Cancelled Shown only with a confirmed reason, so a train that still runs is never marked cancelled from stale data.
  • Not running A planned cancellation: the service will not run.
  • Not calling The train runs but does not stop at the station you picked.
  • Scheduled Has not left its origin yet. Times shown are planned.

Each calling point shows the scheduled time, then the actual time once it is recorded, or the current estimate before that.

Ahead of time

Planned services carry their allocated units before departure, so you can see which units are booked to work upcoming trains. Allocations can change, so check again closer to departure.

Beyond passengers

Empty-stock and stabling moves, test trains and freight appear on the Timetable where enabled. The KPI page measures passenger services only.

Sources and freshness

Schedules, forecasts and actual times come from National Rail and Network Rail data. Live pages load a snapshot and then update as movements arrive, typically within seconds.

Glossary

Headcode1V42
The four-character code for a service: a class digit, a letter, then two digits, such as 1V42. Headcodes are reused across the network and through the day, so they do not identify one specific train.
RID
The unique identifier Darwin gives to one train running on one day. It is what shareable links use.
UID
The identifier for a timetabled service. It repeats on every day the service runs, so it needs a date to be specific.
CRSCDF
The three-letter public station code, such as CDF for Cardiff Central.
TIPLOC
Timing point location code. It covers any timing point, including junctions and passing points, not only stations.
Calling point
A station where a service is scheduled to stop.
Berth
A signalling location where a train's headcode is shown. TrackView displays the current area and berth for running trains.
TOC
Train operating company: the business running the service.
Formation
The units that make up a train, including coupled combinations.
Diagram
The planned sequence of workings for a unit over a day.
ECS
Empty coaching stock: a train moving without passengers, usually with a 5xxx headcode, or 3xxx when time-critical.
Stabling
An empty-stock move that takes units to or from their overnight position. Shown with a Stabling badge and left out of unit statistics.
VSTP
Very-short-term plan: a late-notice schedule change. Revised and Short term chips mark other timetable variations.
Delay minutes
The gap in minutes between the scheduled time and the actual or estimated time.

Frequently asked questions

Is my train late right now?

Open Live or Timetable and find your service. Each calling point shows the scheduled time alongside the actual or estimated time where one is held. The badge reads On time, Delayed with minutes late, At station, Cancelled, or Scheduled before it leaves its origin.

Which unit or formation is on my service?

Live service details list the allocated units, including coupled formations and vehicle details where available. The Units page shows which units have worked which services, with diagrams and mileage.

What calls at my station today, and what is due next?

Use Timetable to pick a station and date. Planned calls are shown for the whole day, with a live overlay of actual and estimated times wherever a service is running.

What ran yesterday from my station?

Use History to pick a station and date. Completed journeys list calling points, punctuality, unit allocations and formation details, with downloadable records.

How punctual is my line or operator?

KPI shows punctuality to the minute, cancellations and delay minutes by line, operator, station and day. It measures passenger services only.

Can I see which unit will work my train before it runs?

Yes. Planned services carry their allocated units before departure, so Services and Units show which units are booked for upcoming trains, not just ones already running. Allocations can change, so check again closer to departure.

Does TrackView show freight, test trains or stabling moves?

Where the timetable holds them, yes. Alongside passenger services you may see empty-stock and stabling moves, test trains, and freight on the Timetable where enabled. These workings usually have less live detail than passenger trains.

How fresh is the data?

Live pages load a snapshot and then update as movements arrive, typically within seconds. Estimates come from National Rail's Darwin feed where one is published; otherwise the timetable is shown. Always check with your operator before travelling.