feat(phase-15-jkl): three more case studies — twelve installations, five continents#19
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…ive continents Adds the Cablebús Línea 2, IFS Cloud Cable Car (London Thames) and Portland Aerial Tram (OHSU) case studies. Twelve installations now validated across all six system archetypes on five continents. Phase 15j — Cablebús Línea 2 (Iztapalapa, CDMX), MGD - The longest urban cable car in the world at opening (10.6 km, 7 stations, 2021). Straight-corridor baseline is 4 749 m — 2.2× shorter than the as-built route — the cleanest demonstration to date of the Phase 12c plan-view-routing gap. Phase 15k — IFS Cloud Cable Car (London Thames), MGD - UK's only urban cable car. Optimizer reproduces the Thames-crossing single span at 778 m vs ~ 800 m as-built (-2.7 %), with WATER clearance over the river. Tower count (1 vs 3) differs because shipping-channel clearance is a buildability constraint the DEM does not contain. Phase 15l — Portland Aerial Tram (OHSU), jig-back - The only other US commuter aerial tramway besides Roosevelt Island. Elevation gain matches to -9.9 % (137 m vs 152 m); cabin capacity matches to 1 pax (80 vs 79). Honest gap: the DEM has no I-5 freeway deck, so the optimizer takes a clean single span where the real installation needs the 60 m Sasquatch tower. Three consecutive installations (Roosevelt Island Queensboro Bridge, London Thames shipping channel, Portland I-5 deck) now point at the same missing feature: a ForcedFlyOverZone obstacle volume — the dual of the Phase 7+ NoTowerZone. That is now the unambiguous buildability roadmap item. No source changes — only examples, docs, README, CHANGELOG. The optimizer and 157-test suite are untouched.
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Summary
Adds the Cablebús Línea 2 (CDMX), IFS Cloud Cable Car (London Thames) and Portland Aerial Tram (OHSU) case studies. Twelve real installations now validated across all six system archetypes on five continents.
Phase 15j — Cablebús Línea 2 (Iztapalapa, CDMX), MGD
The longest urban cable car in the world at opening (10.6 km, 7 stations, 2021). The straight-corridor baseline is 4 749 m — 2.2× shorter than the as-built route. Cleanest demonstration of the Phase 12c plan-view-routing gap to date.
Phase 15k — IFS Cloud Cable Car (London Thames), MGD
UK's only urban cable car. Optimizer reproduces the Thames-crossing single span at 778 m vs ≈ 800 m as-built (−2.7 %), with WATER clearance over the river. Tower count differs (1 vs 3) — the buildability constraint is shipping-channel clearance, which the DEM doesn't contain.
Phase 15l — Portland Aerial Tram (OHSU), jig-back
The only other US commuter aerial tramway besides Roosevelt Island. Elevation gain matches to −9.9 % (137 m vs 152 m); cabin capacity matches to 1 pax (80 vs 79 — the closest cabin-capacity reproduction yet). Honest gap: DEM has no I-5 freeway deck, so the optimizer takes a single span where the real installation needs the 60 m "Sasquatch" tower.
The unifying signal
Three consecutive installations — Roosevelt Island (Queensboro Bridge), London (Thames shipping channel), Portland (I-5 deck) — all point at the same missing feature: a
ForcedFlyOverZoneobstacle volume, the dual of the Phase 7+NoTowerZone. That's now the unambiguous buildability roadmap item.Test plan
examples/,docs/, README, CHANGELOG; the optimizer and 157-test suite are untouched