{
  "id": "city-construction-arrow-board",
  "type": "model",
  "title": "工事用矢印板",
  "titleEn": "Construction arrow board",
  "description": "工事区間の手前で車線の変更を促す、自立式の矢印板です。青い板面と白い矢印3つ、黄色と黒の縁取り、亜鉛めっきの支柱と後ろ脚、ベースの横材とゴムの重しを造形しています。矢印は記号の形状で、注意文や工事名などの文字、点滅灯、転倒時の挙動は含みません。 ゲーム・可視化向け。製造・構造設計・3Dプリント用途は未検証。 外接寸法（X×Y×Z）0.830 × 1.650 × 0.593 m、1,116三角形。単位m・Y-up、水平中央の接地用原点、最下点Y=0。部品ごとの重複UV0と単色PBR材質を収録し、画像テクスチャ・UV2・コライダー・LOD・リグ・動作は付属しません。静的表示用でUnity/VRChat実機検証は未実施。STLはm・Y-up座標の形状のみで色・材質・UV・階層を含みません。",
  "descriptionEn": "A freestanding arrow board that guides drivers to change lanes ahead of roadworks. It models the blue panel with three white chevron arrows, a yellow-and-black border, galvanized uprights and rear legs, a base runner and rubber weights. Arrows are symbolic shapes only; warning text, project names, flashing lamps and tip-over behavior are not included. For games and visualization; not validated for manufacture, structural engineering or 3D printing. Bounding dimensions (X×Y×Z): 0.830 × 1.650 × 0.593 m; 1,116 triangles. Metres, Y-up, horizontally centered placement origin with minimum Y=0, not an articulation or mounting pivot. Includes overlapping component UV0 and constant-color PBR materials, with no image textures, unique UV2, colliders, LOD, rig or runtime behavior. Static visualization only; Unity/VRChat editor and runtime tests have not been performed. STL uses metre-valued Y-up coordinates and contains geometry only, without color, materials, UVs or hierarchy.",
  "category": "urban",
  "tags": [
    "city",
    "street",
    "original",
    "claude",
    "roadworks",
    "arrow-board",
    "traffic-control",
    "sign",
    "矢印板"
  ],
  "author": "Claude",
  "license": "CC-BY-4.0",
  "version": "1.0.0",
  "status": "public",
  "created": "2026-10-17",
  "updated": "2026-10-17",
  "thumbnail": "https://raw.githubusercontent.com/Xenoah/meshcopia/ac68d19bc4b1b98536879a5a5faf9414f92e212b/content/assets/city-construction-arrow-board/preview.png",
  "preview": "city-construction-arrow-board.glb",
  "unit": "m",
  "upAxis": "Y",
  "triangles": 1116,
  "dimensions": [
    0.83,
    1.65,
    0.593018
  ],
  "uv": "Per-component primitive or automatically unwrapped UVs. Overlapping between components; not a packed unique lightmap atlas. Solid-color PBR materials; no external textures. STL has no colors or UVs.",
  "provenance": {
    "method": "Original procedural street-object geometry authored by Claude (Anthropic AI model)",
    "tool": "Blender 4.5.14 LTS; Meshcopia Claude street-object generator 1.0",
    "rights": "Original geometry and material design written by Claude at the request of Xenoah for CC-BY-4.0 publication in Meshcopia. No third-party meshes, scans, brands, logos, lettering or font files.",
    "generatorUrl": "https://github.com/Xenoah/meshcopia/blob/main/scripts/city_expansion/frozen/batch-062/scripts/city_expansion/claude_roadwork_market_objects.py",
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    "sourceRecipeSha256": "1cc4e1a513df7239278b4dbd0d9a54ca4f519b24ec562ffac3577bf5d221307f",
    "sourceHelpersSha256": "bc37c71fb5b3a6741aadb88ad44cadc3d14f3546fe47b76dc9db0a84ca7cd4d8",
    "alternateFormat": "STL triangulated from the exact reimported GLB, metre-valued Y-up coordinates. No printability or manufacture validation.",
    "stlSha256": "a69f9d509bd364da3580fa9196393c92470af4d9b9c59255e466a865eb44afb7"
  },
  "usages": [
    {
      "relationship": "original",
      "project": "Meshcopia",
      "sourceUrl": "https://github.com/Xenoah/meshcopia",
      "sourcePaths": [
        "scripts/city_expansion/frozen/batch-062/scripts/city_expansion/claude_roadwork_market_objects.py",
        "scripts/city_expansion/frozen/batch-062/scripts/city_expansion/common.py"
      ],
      "selectors": [
        "city-construction-arrow-board"
      ],
      "context": "Original street object authored by Claude for this library. No external deployment or reuse claimed."
    }
  ],
  "pageUrl": "https://xenoah.github.io/meshcopia/assets/city-construction-arrow-board/",
  "manifestUrl": "https://xenoah.github.io/meshcopia/api/assets/city-construction-arrow-board.json",
  "attribution": "Construction arrow board by Claude / Meshcopia\nhttps://xenoah.github.io/meshcopia/assets/city-construction-arrow-board/\nCC BY 4.0 — https://creativecommons.org/licenses/by/4.0/\nChanges: none. If modified, replace this line with a description of your changes.",
  "licenseUrl": "https://creativecommons.org/licenses/by/4.0/",
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      "url": "https://xenoah.github.io/meshcopia/assets/city-construction-arrow-board/source/city-construction-arrow-board.glb"
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      "url": "https://raw.githubusercontent.com/Xenoah/meshcopia/ac68d19bc4b1b98536879a5a5faf9414f92e212b/content/assets/city-construction-arrow-board/source/city-construction-arrow-board.stl"
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      "archive": {
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        "url": "https://github.com/Xenoah/meshcopia/releases/download/cohort-new30-v1.0.0/city-construction-arrow-board-1.0.0-fbx-minimal-1.0.0.zip"
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      "files": [
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        "filename": "LICENSE.txt",
        "sha256": "ba76ad4e4b7ddf996ae4133e5af2bb3bd70d0569c3b0dc53757df3318e7dd866",
        "text": "Construction arrow board by Claude / Meshcopia\nCopyright (c) 2026 Claude\nCC BY 4.0: https://creativecommons.org/licenses/by/4.0/\nSource: https://xenoah.github.io/meshcopia/assets/city-construction-arrow-board/\nProvided as-is, without warranties (license Section 5).\nChanges: none.\nAdditional changes: Converted unchanged source GLB geometry to FBX, with documented compatible material/texture derivatives.\n"
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  "previewUrl": "https://xenoah.github.io/meshcopia/assets/city-construction-arrow-board/source/city-construction-arrow-board.glb"
}