UK 2022 rail station flow images

Original Article ↗ Hacker News Discussion ↗

Interactive visualizations of 2022 passenger flows through Great Britain’s rail stations reveal how travel volumes concentrate around major hubs like London, York, and Brighton, and how routes are inferred from ticket sales via shortest-path assumptions. Commenters explore what the plots do and don’t show—such as Heathrow traffic, ferry-linked routes, and multi-leg journeys—while also using the data as a springboard to critique UK rail policy, ticketing complexity, and the contrast between London’s relatively integrated transport and fragmented systems elsewhere. Technical issues with GitHub’s large file hosting and browser compatibility round out the reactions, as many struggle to actually load the high-volume images.

What the visualizations show

  • Images depict passenger flows from a chosen rail station over the GB rail network.
  • Line thickness indicates volume of journeys; routes are computed as shortest rail paths between origin and destination stations.
  • Based largely on ticket sales; in many cases the exact route is unknown, so journeys are mapped to shortest paths rather than fastest or actually taken routes.
  • Multi-leg journeys appear as continuous flows (e.g., Exeter–Aberdeen via changes), which can be misleading if interpreted as direct services.
  • Some users note ambiguity for small/quiet stations where relative weights are hard to interpret.

Patterns and notable stations

  • London termini show strong regional focus:
    • Kings Cross for Scotland/North East, Euston for North West, St Pancras for Midlands/SE, Paddington for South West, Victoria for South/South East.
  • York is highlighted as a strong regional hub with significant through traffic and good connectivity.
  • HS1 endpoints (Ashford International, St Pancras) show high flows, raising frustration over HS2 being curtailed.
  • Heathrow shows relatively low rail traffic in the data; commenters attribute this to high Heathrow Express prices and heavy use of Tube/Elizabeth line.

Ticketing, governance, and ideology

  • Discussion of UK rail franchising, route restrictions (“via X”), and operator-specific tickets as artifacts of a fragmented, pseudo-competitive system.
  • Several posts argue this complexity raises prices, worsens user experience, and stems from ideological commitments against public ownership.
  • Others caution that public ownership is not a cure-all and emphasize the need for pragmatic, efficiency-focused management.
  • London is repeatedly described as an outlier with far better integration (Oyster/contactless, frequent services) than the rest of the UK.

International and intra-UK comparisons

  • Dutch OV-chipkaart/OVpay and integrated national system seen as a positive model.
  • Paris, Berlin, and some cross-border European rail experiences are criticized as confusing or card-unfriendly.
  • North American commenters contrast UK’s flawed but extensive rail with car-dominated systems at home.

Technical and access issues

  • Many cannot see images due to GitHub LFS bandwidth limits; only LFS pointer text appears.
  • Others report rendering or CSP issues, especially on iOS Safari and some Firefox setups.