Files
tokyo-wangan-racing/reference/ramps/INDEX.md
T
jesse c297b20aed Disable PA on/off ramps; restore mainline to pre-ramp state
Three iterations of the Daikoku PA ramps never read as a real
interchange. Measured why, rather than tuning further:

  * the entry and exit decks INTERSECTED -- 2547 sample pairs within
    30 studs horizontally at <12 studs dY, worst case 0.5 studs apart
    at dY=0.0. On screen that is the bowtie tangle of white rails.
  * both real Daikoku ramps turn the SAME way (clockwise; the guide
    video says "right, right"). This build mirrored them into each
    other.
  * the real arc wraps OUTSIDE the lot and forms its north/east
    boundary. This build cut across the apron interior.

Gated behind BUILD_PA_RAMPS=false rather than deleted -- the radius
was already correct (470 studs vs an OSM-measured mean of 469) and
the merge lands tangent at 0.1-0.2 deg divergence. Both worth keeping.

Also removed two leftovers that would have outlived the ramps:

  * rampOpen punched holes in the mainline's outer parapet, railing
    and kill wall for ramps that no longer exist -- a barrier gap with
    a drop behind it. Sealed via RAMP_EDGE_OPENINGS=false. Verified:
    Barrier/EdgeRail/KillWall = 1646 each = 823 samples x 2 edges,
    0 road samples without a guard within 90 studs.
  * gore zebra hatching painted 1024 bars + 64 boundary lines marking
    a junction that is not there. Sealed via RAMP_GORE_MARKINGS=false.

Verified after a cache-busting fresh rebuild (Studio's require() cache
otherwise serves the previous map and reports a false pass):
  parts 22628 -> 15988
  all ramp part classes = 0
  Road = 823 (unchanged), spawn pad + PASpawn intact
  clip probe TRUSTWORTHY (control +11/-0), CLIPPING=0

Research and rebuild spec kept for when this is revisited:
reference/ramps/BUILD_SPEC.md, INDEX.md (10 CC-licensed Commons
photos), docs/daikoku-reference-spec.md (OSM circle fits).
2026-08-03 21:15:25 -04:00

1.9 KiB

PA Ramp Reference Images

Downloaded 2026-08-03. All files verified present on disk and integrity-checked with PIL (12/12 valid, 0 corrupt).

Wikimedia Commons (fetched by research agent)

File Px Shows License
Daikoku-PA.JPG 2487x1797 Daikoku PA overview CC BY 3.0
Daikoku-JCT.JPG 2560x1920 Daikoku JCT elevated stack CC BY 3.0
DaikokuJCT-Bnishi.JPG 640x480 Daikoku JCT bayside west CC BY-SA 3.0
Shutoko_daikokuPA.jpg 1280x960 Daikoku PA elevated structure CC BY-SA 3.0
Shutoko_oiPA_east.jpg 1280x960 Oi PA east CC BY-SA 3.0
Shutoko_oiPA_west.jpg 1280x960 Oi PA west (ground level, facility bldg) CC BY-SA 3.0
Shutoko_heiwajimaPA_up.jpg 1280x960 Heiwajima PA inbound CC BY-SA 3.0
Shutoko_heiwajimaPA_down.jpg 1280x960 Heiwajima PA outbound CC BY-SA 3.0
Shutoko_shibauraPA.jpg 1280x960 Shibaura PA CC BY-SA 3.0
Shuto_expressway_shibaura_pa.jpg 1000x680 Shibaura PA / expressway CC BY-SA 3.0

License note: all CC BY / CC BY-SA. Reference-only for shape study. Do NOT trace directly into shipped assets without attribution (see reference-image-research skill, license matrix).

From project NAS archive (higher value for geometry)

File Px Shows
aerial/daikoku_z19.jpg Esri z19 Best plan view. Satellite of Daikoku PA: single large-radius arc wrapping the lot
aerial/daikoku_bldg_big.jpg Daikoku facility building aerial
daikoku_jct_sheet2.jpg 1728x972 Onboard contact sheet, Daikoku JCT
exit_to_baybridge_sheet2.jpg 1728x1296 Best ground view. Off-ramp divergence, gore hatching, jersey+mesh edge, box girder

Measured source of truth

docs/daikoku-reference-spec.md — OSM Overpass geometry with Kasa circle fits of the actual ramp ways. This is measured, not estimated, and outranks generic standards for Daikoku-specific radii.