# 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.