The encyclopedia · Software & IT · Operational decision · 2016–2020
Heathrow's live transfer forecasts let flow managers act in real time
Over a quarter of Heathrow passengers connect; a CART-based predictor gave 2-hour transfer forecasts every five minutes in a live Terminal 5 trial.
Heathrow Airport
the move
More than a quarter of Heathrow's passengers are making a flight transfer, so connection flow is a major operations lever. Airport operations centres exist to share data across stakeholders, but deciding what to predict and how to use it live was the open question.
Eurocontrol commissioned a study in early 2016, and a consortium led by University College London with the University of Virginia and Heathrow focused on predicting transfer journeys. The team built models with classical and regression trees (CART) from multiple databases.
In a live trial on 19 July 2016, the system refreshed 2-hour window predictions every five minutes, with prediction intervals, checked against cameras in Terminal 5. The trial demonstrated that accurate live forecasts are possible and useful for flow managers.
The pilot was published as a Wagner Prize special-issue paper in the INFORMS Journal on Applied Analytics (2020), an example of airport collaborative decision-making with real-time analytics.
why it works
- Live predictions with intervals give flow managers a cue to intervene before a crunch.
- A quarter of traffic is transfers, so even small gains move thousands of passengers.
- CART models are explainable and quick to build from existing databases.
- The APOC setting turns the forecast into action across stakeholders.
what transfers
An airport's biggest lever is shared real-time information: even imperfect live forecasts with confidence intervals beat hindsight when minutes decide a missed connection.
what came after
The 8-hour live trial on 19 July 2016 produced accurate 2-hour forecasts refreshed every five minutes; the approach was documented in a 2020 IJAA Wagner Prize paper and fed Eurocontrol's work on airport operations centres.
references
- London Heathrow Airport Uses Real-Time Analytics for Improving Operations
- Heathrow tests machine learning algorithms to improve passenger flight connections
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