{
  "id": "safety/helmet-motorcycle-standard-misidentification",
  "signature": "AI tells a motorcyclist that any helmet with a DOT sticker is safe for highway use, ignoring that DOT alone does not meet ECE 22.06 or Snell M2025 standards for high-speed impact",
  "signature_zh": "AI告诉摩托车手任何带有DOT贴纸的头盔都适合高速公路使用，忽略了仅DOT标准不符合ECE 22.06或Snell M2025高速冲击标准",
  "regex": "DOT.*helmet.*safe|helmet.*DOT.*highway|ECE.*not.*needed",
  "domain": "safety",
  "category": "config_error",
  "subcategory": null,
  "root_cause": "DOT (FMVSS 218) is a self-certification standard in the US with minimal testing; ECE 22.06 (Europe) and Snell M2025 (global) require independent lab testing for rotational forces and high-speed impacts, which DOT alone does not cover.",
  "root_cause_type": "generic",
  "root_cause_zh": "DOT（FMVSS 218）是美国自认证标准，测试要求最低；ECE 22.06（欧洲）和Snell M2025（全球）要求独立实验室测试旋转力及高速冲击，仅DOT标准无法覆盖。",
  "versions": [
    {
      "version": "ECE 22.06 (2023)",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "Snell M2025 (2025)",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    },
    {
      "version": "DOT FMVSS 218 Rev. 2022",
      "introduced": null,
      "deprecated": null,
      "removed": null,
      "behavior_change": null,
      "status": "active"
    }
  ],
  "os_specific": {},
  "dead_ends": [
    {
      "action": "",
      "why_fails": "Assuming a DOT sticker means the helmet is tested for high-speed crashes; DOT only tests at 4.8–5.6 m/s (11–12.5 mph), far below highway speeds.",
      "fail_rate": 0.9,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Using a novelty helmet (no standard) because it's cheaper; these provide zero protection in a crash.",
      "fail_rate": 0.95,
      "condition": "",
      "sources": []
    },
    {
      "action": "",
      "why_fails": "Believing a used helmet is fine if it looks intact; helmet foam degrades after 5 years and after any impact.",
      "fail_rate": 0.85,
      "condition": "",
      "sources": []
    }
  ],
  "workarounds": [
    {
      "action": "Check the helmet's certification label: ECE 22.06 (marked 'E' with a number in a circle), Snell M2025 (sticker inside), or FIM (for racing). Avoid helmets with only DOT certification for highway use.",
      "success_rate": 0.85,
      "how": "Check the helmet's certification label: ECE 22.06 (marked 'E' with a number in a circle), Snell M2025 (sticker inside), or FIM (for racing). Avoid helmets with only DOT certification for highway use.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Replace any helmet older than 5 years from the manufacture date (stamped on the chin strap). For motorcycles, buy only from reputable brands like Shoei, Arai, AGV, or Schuberth.",
      "success_rate": 0.9,
      "how": "Replace any helmet older than 5 years from the manufacture date (stamped on the chin strap). For motorcycles, buy only from reputable brands like Shoei, Arai, AGV, or Schuberth.",
      "condition": "",
      "sources": []
    },
    {
      "action": "Use the SHARP rating system (UK) or Snell Foundation database to verify helmet performance at highway speeds before purchase.",
      "success_rate": 0.8,
      "how": "Use the SHARP rating system (UK) or Snell Foundation database to verify helmet performance at highway speeds before purchase.",
      "condition": "",
      "sources": []
    }
  ],
  "workarounds_zh": [
    "Check the helmet's certification label: ECE 22.06 (marked 'E' with a number in a circle), Snell M2025 (sticker inside), or FIM (for racing). Avoid helmets with only DOT certification for highway use.",
    "Replace any helmet older than 5 years from the manufacture date (stamped on the chin strap). For motorcycles, buy only from reputable brands like Shoei, Arai, AGV, or Schuberth.",
    "Use the SHARP rating system (UK) or Snell Foundation database to verify helmet performance at highway speeds before purchase."
  ],
  "transition_graph": {
    "leads_to": [],
    "preceded_by": [],
    "frequently_confused_with": []
  },
  "official_doc_url": "https://www.smf.org/standards/m/2025",
  "official_doc_section": null,
  "error_code": null,
  "verification_tier": "ai_generated",
  "confidence": 0.88,
  "fix_success_rate": 0.85,
  "resolvable": "true",
  "first_seen": "2024-06-01",
  "last_confirmed": "2024-06-01",
  "last_updated": "2024-06-01",
  "evidence_count": 1,
  "tags": [],
  "locale": "en",
  "aliases": []
}