CityPulse 3D
A live 3D transit companion for major world cities that shows buses, trains, ferries, and bikes moving in real time on a 3D map, with delay predictions, crowd reports, and a 'calm commute' view that hides noise.
Daily urban commuters and frequent visitors trying to time and de-stress their trips
- Real-time 3D map of every line in your city, with vehicles moving at true relative speed
- 'Quiet car' and 'crowded car' reports from other riders updated in the last 10 minutes
- Delay and disruption predictions that surface 5-10 minutes before official transit alerts
- One-tap 'get me home calm' mode that picks the route with the fewest transfers, most seats, and lowest disruption risk
The London 3D train visualizer got 74 HN points in a day, showing clear appetite for a more atmospheric, real-time way to see a city's transit; existing apps (Citymapper, Transit) are still flat 2D maps.
The HN post actually surpassed the claim — 94 points and 43 comments (not 74), with users reporting emotional responses like 'had it open on my desktop for most of the day' and multiple threads demanding an 'all trains visible' free-roam view, indicating unmet appetite beyond a single-train tracker.Show HN: Follow London Trains in 3D | Hacker News ↗Citymapper - The Ultimate Transport App ↗
All major incumbents surfaced (Citymapper, Transit, Moovit, CityTransit, Fleety) are explicitly flat 2D maps; no commercial real-time 3D transit tracker appears in results, and the HN prototype is a personal demo, leaving a clear gap — though incumbents control GTFS feeds and distribution.Transit - the best app for buses and trains ↗Citymapper - The Ultimate Transport App ↗
TechCrunch confirms Citymapper introduced a recurring subscription purely for ad-removal, proving users pay monthly for transit apps; however, a 3D visualization layer is unproven as standalone premium value, and the 'calm commute' differentiator is speculative until validated.Citymapper lowers the paywall for premium features but keeps monthly subscription for removing ads ↗
Daily commuting is a sticky evergreen behavior and GTFS/GTFS-RT are stable open standards maintained by transit agencies, giving a long runway; risk is that 3D viz is a feature incumbents could add (Apple/Google Maps already ship 3D city layers).
A working prototype already exists on deck.gl + Cloudflare Workers + TFL API (nexttrain.london), and GTFS-RT is a public standard, but HN commenters reported z-order/parallax bugs, missing line branches, and map-vs-train misalignment — multi-city multi-modal (bus/ferry/bike) accuracy at scale is non-trivial.Show HN: Follow London Trains in 3D | Hacker News ↗