{
  "name": "Trailer Creep Evidence Register",
  "version": "1.0",
  "checked_date": "2026-09-11",
  "creator": "Louisville Dock Door Repair Research",
  "page_url": "https://louisvilledockdoorrepair.com/research/trailer-creep/",
  "methodology": {
    "selection": "Purposive source and contrast-case selection; not exhaustive or representative",
    "unit_of_observation": "Source report, incident summary, published wording, regulatory reference, or occupation estimate, according to table",
    "original_contribution": "Editorial comparison, annotation, mechanism coding and preservation of source disagreements; not field measurement or accident reinvestigation",
    "counts": {
      "movement": 7,
      "incidents": 4,
      "wording": 2,
      "regulatory": 13,
      "occupations": 3,
      "sources": 22,
      "claims": 66
    },
    "null_policy": "Empty CSV values and empty JSON strings mean not established or not supplied for that field; never zero",
    "identifiers": "Investigation and inspection identifiers retained as text",
    "source_date_policy": "Document/event dates are distinct from September 11, 2026 verification date",
    "verification": "Direct source text and manufacturer PDF page images where available; indexed primary OSHA text and official withdrawal cross-reference where direct requests failed",
    "calculation": {
      "description": "Difference between rounded published local and national occupation shares",
      "expression": "13.2 - 8.8",
      "value": "4.4",
      "unit": "percentage points",
      "not_an_accident_rate": true
    }
  },
  "datasets": {
    "movement": [
      {
        "record_id": "movement-01",
        "movement_description": "Published account of manufacturer trailer-walk demonstration",
        "reported_value": "4 inches after 3 forklift trips",
        "direction": "horizontal, away from dock",
        "reference_point": "trailer relative to dock",
        "conditions": "Reyco Granning demonstration with paper-roll loads, as reported September 17, 2012",
        "evidence_type": "verified_publication_wording_not_verified_test_measurement",
        "source_id": "3",
        "source_date": "2012-09-17",
        "source_url": "https://www.truckinginfo.com/articles/preventing-dock-walk",
        "interpretation_limit": "Original footage and complete setup were not independently verified. No creep-per-trip rate or operating threshold is derived.",
        "verification_status": "publisher_account_verified_measurement_not_adopted",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-02",
        "movement_description": "Rear-sill deck-height change during air release",
        "reported_value": "2.5–3.5 inches",
        "direction": "vertical, downward",
        "reference_point": "rear sill",
        "conditions": "Air-suspension trailer equipped with a dump valve settling onto internal air-spring bumpers; L816 Rev E, November 2024",
        "evidence_type": "manufacturer_technical_description",
        "source_id": "2",
        "source_date": "2024-11",
        "source_url": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
        "interpretation_limit": "Page 1 rear-sill figure. Page 3 separately gives 2.5–3.2 inches for deck lowering during air dump without reconciling the upper bounds. Both are preserved; neither is horizontal creep.",
        "verification_status": "primary_text_and_page_images_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-03",
        "movement_description": "Typical tire deflection",
        "reported_value": "1–1.5 inches",
        "direction": "vertical",
        "reference_point": "tires",
        "conditions": "Varies with tire type as load increases",
        "evidence_type": "manufacturer_technical_description",
        "source_id": "2",
        "source_date": "2024-11",
        "source_url": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
        "interpretation_limit": "Contribution to vertical floor-height change, not trailer travel away from a dock.",
        "verification_status": "primary_text_and_page_images_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-04",
        "movement_description": "Mechanical-spring-suspension trailer drop",
        "reported_value": "Up to 1.75 inches",
        "direction": "vertical, downward",
        "reference_point": "axle",
        "conditions": "Forklift entering a mechanical-spring-suspension trailer during loading/unloading",
        "evidence_type": "manufacturer_technical_description",
        "source_id": "2",
        "source_date": "2024-11",
        "source_url": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
        "interpretation_limit": "Axle measurement, not a horizontal gap measurement or a universal rear-sill figure.",
        "verification_status": "primary_text_and_page_images_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-05",
        "movement_description": "Air-suspension trailer drop in some configurations",
        "reported_value": "More than 3.5 inches",
        "direction": "vertical, downward",
        "reference_point": "axle",
        "conditions": "Some air-suspension configurations without dump valves or deck-height locking devices",
        "evidence_type": "manufacturer_technical_description",
        "source_id": "2",
        "source_date": "2024-11",
        "source_url": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
        "interpretation_limit": "Configuration-specific manufacturer description, not a threshold or typical horizontal creep distance.",
        "verification_status": "primary_text_and_page_images_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-06",
        "movement_description": "Trailer separation described in investigation 141677.015",
        "reported_value": "Approximately 6 feet",
        "direction": "away from dock",
        "reference_point": "trailer relative to dock",
        "conditions": "December 7, 2021 OSHA event",
        "evidence_type": "agency_narrative",
        "source_id": "5",
        "source_date": "2021-12-07",
        "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
        "interpretation_limit": "Narrative does not establish creep or driver departure as the mechanism.",
        "verification_status": "indexed_primary_narrative_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "movement-07",
        "movement_description": "Forklift fall described in investigation 107330.015",
        "reported_value": "Approximately 1.2 metres, or 4 feet",
        "direction": "vertical, downward",
        "reference_point": "forklift to asphalt",
        "conditions": "June 4, 2018 event following driver departure",
        "evidence_type": "agency_narrative",
        "source_id": "6",
        "source_date": "2018-06-04",
        "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
        "interpretation_limit": "Fall height, not trailer travel. Metric and imperial values are the narrative's paired approximate quantities, not a new conversion.",
        "verification_status": "indexed_primary_narrative_verified",
        "checked_date": "2026-09-11"
      }
    ],
    "incidents": [
      {
        "record_id": "201311214",
        "inspection_id": "306741307",
        "event_date": "2004-05-17",
        "inspection_site_city": "",
        "inspection_site_state": "",
        "geography_basis": "Location not stated in cited abstract",
        "editorial_classification": "explicit_creep_description",
        "source_described_movement": "Trailer began creeping away while forklift was inside; forklift fell",
        "reported_outcome": "Operator hospitalized with lacerations",
        "reported_distance": "",
        "hospitalization_narrative": "Hospitalized",
        "hospitalization_structured": "Hospitalized injury",
        "caveat": "Detailed engineering cause and event geography not established from this abstract.",
        "source_id": "4",
        "source_url": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
        "access_mode": "indexed_primary_text",
        "verification_status": "published_narrative_and_relevant_fields_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "141677.015",
        "inspection_id": "1567163.015",
        "event_date": "2021-12-07",
        "inspection_site_city": "Kaukauna",
        "inspection_site_state": "Wisconsin",
        "geography_basis": "Inspection-site address, not independently geocoded event location",
        "editorial_classification": "separation_mechanism_unspecified",
        "source_described_movement": "Trailer shifted away; forklift wedged between trailer and dock",
        "reported_outcome": "Injuries resulted in paralysis; narrative reports hospitalization",
        "reported_distance": "Approximately 6 feet of trailer movement away from dock",
        "hospitalization_narrative": "Hospitalized",
        "hospitalization_structured": "Hospitalized injury",
        "caveat": "Movement away alone does not establish gradual creep or driver departure.",
        "source_id": "5",
        "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
        "access_mode": "indexed_primary_text",
        "verification_status": "published_narrative_and_relevant_fields_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "107330.015",
        "inspection_id": "1320248.015",
        "event_date": "2018-06-04",
        "inspection_site_city": "Belcamp",
        "inspection_site_state": "Maryland",
        "geography_basis": "Inspection-site address, not independently geocoded event location",
        "editorial_classification": "driver_departure",
        "source_described_movement": "Driver departed with forklift partly inside; forklift fell backward to asphalt",
        "reported_outcome": "Foot fractures",
        "reported_distance": "Approximately 1.2 metres, or 4 feet of vertical forklift fall",
        "hospitalization_narrative": "Hospitalized",
        "hospitalization_structured": "Non Hospitalized injury",
        "caveat": "Hospitalization fields conflict; both preserved. Fall height is not trailer travel.",
        "source_id": "6",
        "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
        "access_mode": "indexed_primary_text",
        "verification_status": "published_narrative_and_relevant_fields_verified",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "200461168",
        "inspection_id": "302925896",
        "event_date": "2001-01-02",
        "inspection_site_city": "",
        "inspection_site_state": "",
        "geography_basis": "Location not established from cited abstract",
        "editorial_classification": "rollback_toward_dock",
        "source_described_movement": "Tractor-trailer rolled toward dock while driver was behind it",
        "reported_outcome": "Driver fatally crushed",
        "reported_distance": "",
        "hospitalization_narrative": "",
        "hospitalization_structured": "Fatality",
        "caveat": "Rollback comparator, not creep; no injury or movement frequency inferred.",
        "source_id": "7",
        "source_url": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
        "access_mode": "indexed_primary_text",
        "verification_status": "published_narrative_and_relevant_fields_verified",
        "checked_date": "2026-09-11"
      }
    ],
    "wording": [
      {
        "record_id": "wording-01",
        "publisher": "Ronald L. Allen / Material Handling & Logistics",
        "publication_date": "2012-02-23",
        "historical_period": "FY 2002–2009",
        "reported_numerator": "11",
        "reported_denominator": "96",
        "mechanism_label": "trailer/dock separation",
        "population_limit": "Author's historical FCIS query; source first calls 96 incidents and then 96 fatalities",
        "editorial_decision": "Attributed historical account only. Underlying extract not reproduced; incident/fatality wording retained as a source limitation. Not a national creep-specific rate.",
        "source_id": "8",
        "source_url": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "wording-02",
        "publisher": "SafeRack",
        "publication_date": "2026-04-24",
        "historical_period": "2002–2009",
        "reported_numerator": "11",
        "reported_denominator": "96",
        "mechanism_label": "trailer creep",
        "population_limit": "Article repeats 96 fatal truck loading incidents and then makes an all-fatal-loading-dock percentage claim",
        "editorial_decision": "Wording verified, causal/population statistic not adopted. Narrower mechanism and broader population are not established by the earlier account.",
        "source_id": "9",
        "source_url": "https://saferack.com/glossary/trailer-creep/",
        "checked_date": "2026-09-11"
      }
    ],
    "regulatory": [
      {
        "record_id": "reg-01",
        "source_id": "10",
        "provision_or_document": "29 CFR 1910.178(k)(1)",
        "issuing_body": "OSHA",
        "document_or_edition_date": "",
        "document_status": "federal_regulatory_text",
        "source_supported_summary": "Brakes and rear-wheel chocks for highway trucks boarded by powered industrial trucks",
        "applicability_limit": "Read with CMV and employer-scope interpretations; not a universal enforcement conclusion.",
        "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-02",
        "source_id": "10",
        "provision_or_document": "29 CFR 1910.178(m)(7)",
        "issuing_body": "OSHA",
        "document_or_edition_date": "",
        "document_status": "federal_regulatory_text",
        "source_supported_summary": "Brakes, wheel blocks, possible support of uncoupled semitrailers and floor checks",
        "applicability_limit": "Not a mandate for a particular proprietary dock-lock product; CMV interpretation scope matters.",
        "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-03",
        "source_id": "11",
        "provision_or_document": "29 CFR 1910.26(c)",
        "issuing_body": "OSHA",
        "document_or_edition_date": "",
        "document_status": "federal_regulatory_text",
        "source_supported_summary": "Portable dockboard securement, with a stated sufficient-contact provision when securement is demonstrated infeasible",
        "applicability_limit": "Separate from transport-vehicle movement control.",
        "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-04",
        "source_id": "11",
        "provision_or_document": "29 CFR 1910.26(d)",
        "issuing_body": "OSHA",
        "document_or_edition_date": "",
        "document_status": "federal_regulatory_text",
        "source_supported_summary": "Measures preventing transport-vehicle movement while employees are on the dockboard",
        "applicability_limit": "Addresses vehicle movement, not merely movement of the board; not a facility-specific jurisdiction determination.",
        "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-05",
        "source_id": "12",
        "provision_or_document": "49 CFR 393.41",
        "issuing_body": "FMCSA",
        "document_or_edition_date": "",
        "document_status": "federal_regulatory_text",
        "source_supported_summary": "Vehicle-category-specific parking-brake provisions",
        "applicability_limit": "Not a stand-alone exemption for every loading-dock employer.",
        "source_url": "https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-393/subpart-C/section-393.41",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-06",
        "source_id": "16",
        "provision_or_document": "March 4, 1998 Blumenthal interpretation",
        "issuing_body": "OSHA",
        "document_or_edition_date": "1998-03-04",
        "document_status": "withdrawn_historical_interpretation",
        "source_supported_summary": "Older loading-dock chocking interpretation explicitly withdrawn in March 7, 2011 letter",
        "applicability_limit": "Historical identification only; status verified in later primary letter, not adopted as current guidance.",
        "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/1998-03-04",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-07",
        "source_id": "17",
        "provision_or_document": "September 14, 2005 USPS interpretation",
        "issuing_body": "OSHA Directorate of Enforcement Programs",
        "document_or_edition_date": "2005-09-14",
        "document_status": "published_fact_specific_interpretation",
        "source_supported_summary": "Discusses chocking and qualifying alternative movement-prevention methods for assumed USPS-owned vehicles",
        "applicability_limit": "USPS-owned-vehicle assumption is essential; not a universal equipment exemption.",
        "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2005-09-14",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-08",
        "source_id": "13",
        "provision_or_document": "November 8, 2005 CMV interpretation",
        "issuing_body": "OSHA Directorate of Enforcement Programs",
        "document_or_edition_date": "2005-11-08",
        "document_status": "published_interpretation",
        "source_supported_summary": "Explains FMCSA braking regulation's displacement of specified OSHA chocking enforcement for CMV operators",
        "applicability_limit": "Federal jurisdiction statement with non-CMV distinction; not automatically State Plan policy.",
        "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2005-11-08",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-09",
        "source_id": "14",
        "provision_or_document": "March 7, 2011 loading-facility interpretation",
        "issuing_body": "OSHA Directorate of Enforcement Programs",
        "document_or_edition_date": "2011-03-07",
        "document_status": "published_interpretation",
        "source_supported_summary": "Preserves distinction for companies that do not own, operate or lease CMVs and withdraws older guidance",
        "applicability_limit": "Employer relationship, vehicle category and jurisdiction require separate consideration.",
        "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-10",
        "source_id": "15",
        "provision_or_document": "June 14, 2011 State Plan interpretation",
        "issuing_body": "OSHA Directorate of Enforcement Programs",
        "document_or_edition_date": "2011-06-14",
        "document_status": "published_interpretation",
        "source_supported_summary": "Federal jurisdiction limitations are not directly applicable to State Plans",
        "applicability_limit": "Does not independently establish a Kentucky-specific CMV enforcement outcome.",
        "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2011-06-14",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-11",
        "source_id": "18",
        "provision_or_document": "803 KAR 2:313, Section 2",
        "issuing_body": "Kentucky Occupational Safety and Health Standards Board",
        "document_or_edition_date": "July 1, 2016 edition plus November 18, 2016 revisions",
        "document_status": "state_regulatory_text",
        "source_supported_summary": "Incorporates specified Subpart N materials with state definitions",
        "applicability_limit": "Not automatic adoption of all subsequent federal interpretations.",
        "source_url": "https://apps.legislature.ky.gov/law/kar/titles/803/002/313/",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-12",
        "source_id": "19",
        "provision_or_document": "803 KAR 2:303, Section 2",
        "issuing_body": "Kentucky Occupational Safety and Health Standards Board",
        "document_or_edition_date": "July 1, 2015 edition plus November 18, 2016 revisions",
        "document_status": "state_regulatory_text",
        "source_supported_summary": "Incorporates specified Subpart D materials with state definitions",
        "applicability_limit": "Not an undated assertion that Kentucky text always equals current federal text.",
        "source_url": "https://apps.legislature.ky.gov/law/kar/titles/803/002/303/",
        "checked_date": "2026-09-11"
      },
      {
        "record_id": "reg-13",
        "source_id": "20",
        "provision_or_document": "Kentucky OSH Compliance",
        "issuing_body": "Kentucky Education and Labor Cabinet",
        "document_or_edition_date": "",
        "document_status": "agency_records_and_policy_route",
        "source_supported_summary": "Identifies state enforcement office, records searches and notice that federal policies may or may not be adopted",
        "applicability_limit": "Not a verified local creep count or a Kentucky-specific interpretation of every carrier/dock-employer relationship.",
        "source_url": "https://elc.ky.gov/workplace-standards/Pages/OSH-Compliance.aspx",
        "checked_date": "2026-09-11"
      }
    ],
    "occupations": [
      {
        "occupation_code": "",
        "occupation_title": "Transportation and material moving occupations",
        "employment_estimate": 90400,
        "metro_employment_share_percent": "13.2",
        "us_employment_share_percent": "8.8",
        "reference_period": "May 2025",
        "publication_date": "2026-07-10",
        "geography": "Louisville/Jefferson County, KY-IN Metropolitan Statistical Area",
        "interpretation_limit": "Broad occupation group, not loading-dock employment; denominator is total employment in the respective geography.",
        "source_id": "21",
        "source_url": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
        "checked_date": "2026-09-11"
      },
      {
        "occupation_code": "",
        "occupation_title": "Industrial truck and tractor operators",
        "employment_estimate": 4230,
        "metro_employment_share_percent": "",
        "us_employment_share_percent": "",
        "reference_period": "May 2025",
        "publication_date": "2026-07-10",
        "geography": "Louisville/Jefferson County, KY-IN Metropolitan Statistical Area",
        "interpretation_limit": "Detailed occupation within broad group; not limited precisely to forklift operators.",
        "source_id": "21",
        "source_url": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
        "checked_date": "2026-09-11"
      },
      {
        "occupation_code": "",
        "occupation_title": "Heavy and tractor-trailer truck drivers",
        "employment_estimate": 10820,
        "metro_employment_share_percent": "",
        "us_employment_share_percent": "",
        "reference_period": "May 2025",
        "publication_date": "2026-07-10",
        "geography": "Louisville/Jefferson County, KY-IN Metropolitan Statistical Area",
        "interpretation_limit": "Detailed occupation within broad group; jobs are not loading-dock visits.",
        "source_id": "21",
        "source_url": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
        "checked_date": "2026-09-11"
      }
    ]
  },
  "source_register": [
    {
      "source_id": "1",
      "publisher": "Rite-Hite",
      "title": "Loading Dock Accidents",
      "source_date": "",
      "source_url": "https://www.ritehite.com/en/am/solutions/solutions-by-need/loading-dock-safety-and-security/loading-dock-accidents",
      "scope_note": "Manufacturer terminology for creep, early departure, trailer upending and landing-gear collapse; unrelated promotional statistics excluded.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "2",
      "publisher": "Hendrickson",
      "title": "Trailer Loading Dock Terms and Solutions; L816, Revision E",
      "source_date": "2024-11",
      "source_url": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "scope_note": "Manufacturer descriptions, not independent measurements. Page 1 rear-sill range and page 3 deck-lowering range are retained separately.",
      "access_mode": "direct_pdf_text_and_page_images",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "3",
      "publisher": "Tom Berg / Heavy Duty Trucking",
      "title": "Preventing Dock Walk",
      "source_date": "2012-09-17",
      "source_url": "https://www.truckinginfo.com/articles/preventing-dock-walk",
      "scope_note": "Primary evidence of the journalist's published account, not primary test documentation. The reported demonstration and its measurement were not independently verified.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "4",
      "publisher": "OSHA",
      "title": "Accident Summary 201311214; inspection 306741307",
      "source_date": "2004-05-17",
      "source_url": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
      "scope_note": "Date is the event date. Published abstract explicitly describes creep; no detailed engineering cause or location supplied in that abstract.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct agency-page request returned an access error; complete indexed abstract and injury fields read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "5",
      "publisher": "OSHA / Appleton Area Office",
      "title": "Inspection 1567163.015; investigation 141677.015",
      "source_date": "2021-12-07",
      "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "scope_note": "Date is the event date. Inspection-site address is not independently geocoded event location. The narrative does not establish the movement mechanism.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct agency-page request returned an access error; complete indexed narrative and relevant structured fields read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "6",
      "publisher": "Maryland Occupational Safety and Health / OSHA",
      "title": "Inspection 1320248.015; investigation 107330.015",
      "source_date": "2018-06-04",
      "source_url": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "scope_note": "Date is the event date. Hospitalization narrative and structured field conflict; neither is selected as the definitive outcome.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct agency-page request returned an access error; complete indexed narrative and relevant structured fields read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "7",
      "publisher": "OSHA",
      "title": "Accident Summary 200461168; inspection 302925896",
      "source_date": "2001-01-02",
      "source_url": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "scope_note": "Date is the event date. Rollback toward the dock; not classified as creep. Location is not supplied in the cited abstract.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct agency-page request returned an access error; complete indexed abstract and relevant structured fields read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "8",
      "publisher": "Ronald L. Allen / Material Handling & Logistics",
      "title": "Prevent Trailer/Dock Separation Incidents",
      "source_date": "2012-02-23",
      "source_url": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "scope_note": "Primary evidence of the author's historical analysis and wording, not a reproduced OSHA extraction. Original text shifts from 96 incidents to 96 fatalities; no new rate calculated.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "9",
      "publisher": "SafeRack",
      "title": "Trailer Creep",
      "source_date": "2026-04-24",
      "source_url": "https://saferack.com/glossary/trailer-creep/",
      "scope_note": "Primary evidence of this publisher's wording and displayed date only; the creep-specific fatality statistic is not adopted as a factual population estimate.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "10",
      "publisher": "OSHA / Office of the Federal Register via eCFR",
      "title": "29 CFR 1910.178 — Powered industrial trucks",
      "source_date": "",
      "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178",
      "scope_note": "Federal text, including (k)(1) and (m)(7); read alongside relevant interpretation letters. eCFR is authoritative but not the official legal print edition.",
      "access_mode": "direct_html",
      "access_note": "Displayed title currency was September 9, 2026; checked September 11, 2026.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "11",
      "publisher": "OSHA / Office of the Federal Register via eCFR",
      "title": "29 CFR 1910.26 — Dockboards",
      "source_date": "",
      "source_url": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26",
      "scope_note": "Paragraph (c) addresses portable dockboard securement, including its stated infeasibility provision; paragraph (d) addresses transport-vehicle movement.",
      "access_mode": "direct_html",
      "access_note": "Checked displayed federal text; not a facility-specific legal determination.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "12",
      "publisher": "FMCSA / Office of the Federal Register via eCFR",
      "title": "49 CFR 393.41 — Parking brake system",
      "source_date": "",
      "source_url": "https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-393/subpart-C/section-393.41",
      "scope_note": "Vehicle-category-specific parking-brake provisions; not a blanket loading-facility exemption.",
      "access_mode": "direct_html",
      "access_note": "Displayed title currency was September 9, 2026; checked September 11, 2026.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "13",
      "publisher": "OSHA Directorate of Enforcement Programs",
      "title": "Chocking requirements for trailers docked to buildings with downward approaches",
      "source_date": "2005-11-08",
      "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2005-11-08",
      "scope_note": "Published federal CMV/non-CMV enforcement interpretation, not a universal State Plan conclusion.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct request returned an access error; substantive indexed agency letter read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "14",
      "publisher": "OSHA Directorate of Enforcement Programs",
      "title": "Clarification of OSHA's authority to enforce wheel chocking of commercial motor vehicles and related safety hazards at loading facilities",
      "source_date": "2011-03-07",
      "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07",
      "scope_note": "Preserves own/operate/lease distinction and explicit withdrawal of March 4, 1998 letter; no facility-specific determination.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct request returned an access error; substantive indexed agency letter read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "15",
      "publisher": "OSHA Directorate of Enforcement Programs",
      "title": "Enforcement of wheel chocking requirements in State Plan States",
      "source_date": "2011-06-14",
      "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2011-06-14",
      "scope_note": "Federal jurisdiction limitations are not directly applicable to State Plans; not proof of a particular Kentucky enforcement policy.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct request returned an access error; substantive indexed agency interpretation read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "16",
      "publisher": "OSHA",
      "title": "Trailer trucks must be restrained/chocked during forklift dock operations",
      "source_date": "1998-03-04",
      "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/1998-03-04",
      "scope_note": "Withdrawn historical letter addressed to Blumenthal. Status independently checked against OSHA's March 7, 2011 letter; historical substance not adopted as current guidance.",
      "access_mode": "indexed_primary_metadata_and_later_primary_withdrawal",
      "access_note": "Direct original request failed. Agency indexed archive metadata and later official withdrawal text checked.",
      "verification_support_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "17",
      "publisher": "OSHA Directorate of Enforcement Programs",
      "title": "Chocking of trailers at United States Postal Service facilities",
      "source_date": "2005-09-14",
      "source_url": "https://www.osha.gov/laws-regs/standardinterpretations/2005-09-14",
      "scope_note": "Letter assumes USPS-owned vehicles; qualifying alternatives discussed within that stated fact pattern, not a blanket equipment exemption.",
      "access_mode": "indexed_primary_text",
      "access_note": "Direct request returned an access error; full substantive indexed agency letter read.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "18",
      "publisher": "Kentucky Occupational Safety and Health Standards Board / Legislative Research Commission",
      "title": "803 KAR 2:313 — Materials handling and storage, Section 2",
      "source_date": "",
      "source_url": "https://apps.legislature.ky.gov/law/kar/titles/803/002/313/",
      "scope_note": "Incorporates July 1, 2016 Subpart N edition plus specified November 18, 2016 revisions, subject to state definitions.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "19",
      "publisher": "Kentucky Occupational Safety and Health Standards Board / Legislative Research Commission",
      "title": "803 KAR 2:303 — Walking-working surfaces, Section 2",
      "source_date": "",
      "source_url": "https://apps.legislature.ky.gov/law/kar/titles/803/002/303/",
      "scope_note": "Incorporates July 1, 2015 Subpart D edition plus specified November 18, 2016 revisions, subject to state definitions.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "20",
      "publisher": "Kentucky Education and Labor Cabinet",
      "title": "OSH Compliance",
      "source_date": "",
      "source_url": "https://elc.ky.gov/workplace-standards/Pages/OSH-Compliance.aspx",
      "scope_note": "State office, records routes and state adoption-policy statement; not evidence of a county accident count or a particular CMV determination.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "21",
      "publisher": "U.S. Bureau of Labor Statistics",
      "title": "Occupational Employment and Wages in Louisville/Jefferson County, KY-IN — May 2025",
      "source_date": "2026-07-10",
      "source_url": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "scope_note": "May 2025 estimates for the cross-state metropolitan statistical area, not Jefferson County alone or an accident-exposure denominator.",
      "access_mode": "direct_html",
      "access_note": "Occupation codes are not supplied in the cited release and are left blank rather than inferred.",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    },
    {
      "source_id": "22",
      "publisher": "Canadian Centre for Occupational Health and Safety",
      "title": "Forklift Trucks — Loading and Unloading",
      "source_date": "2022-07-26",
      "source_url": "https://www.ccohs.ca/oshanswers/safety_haz/forklift/loading.html",
      "scope_note": "Fact-sheet revision date; Canadian educational guidance, not Kentucky law.",
      "access_mode": "direct_html",
      "access_note": "",
      "verification_support_urls": "",
      "checked_date": "2026-09-11"
    }
  ],
  "claim_ledger": [
    {
      "claim_id": "C001",
      "claim": "Trailer creep is unintended incremental separation away during loading/unloading.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "1;2",
      "source_urls": "https://www.ritehite.com/en/am/solutions/solutions-by-need/loading-dock-safety-and-security/loading-dock-accidents;https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain technical definition; no frequency claim."
    },
    {
      "claim_id": "C002",
      "claim": "Creep is not the same event as a driver pulling away early.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "1;6",
      "source_urls": "https://www.ritehite.com/en/am/solutions/solutions-by-need/loading-dock-safety-and-security/loading-dock-accidents;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep separate mechanism labels."
    },
    {
      "claim_id": "C003",
      "claim": "Dock walk and trailer walk are related loading-dock terms for creep.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "1;2",
      "source_urls": "https://www.ritehite.com/en/am/solutions/solutions-by-need/loading-dock-safety-and-security/loading-dock-accidents;https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Limit synonyms to this loading-dock context."
    },
    {
      "claim_id": "C004",
      "claim": "Allen published the historical 11-of-96 account in 2012.",
      "claim_type": "current_verification_required",
      "status": "publishable_attribution_only",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "Primary evidence is the original author's wording, not a reproduced query."
    },
    {
      "claim_id": "C005",
      "claim": "Allen's numerator concerns trailer/dock separation rather than creep alone.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve original category."
    },
    {
      "claim_id": "C006",
      "claim": "The historical query period was FY 2002–2009 as reported by Allen.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve fiscal-year scope."
    },
    {
      "claim_id": "C007",
      "claim": "The 2021 narrative reports approximately six feet of trailer movement away.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "5",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep event date and unspecified mechanism."
    },
    {
      "claim_id": "C008",
      "claim": "The 2018 narrative reports an approximately 1.2-metre/four-foot vertical forklift fall.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not label this trailer travel."
    },
    {
      "claim_id": "C009",
      "claim": "Hendrickson describes 2.5–3.5 inches of rear-sill lowering after dump-valve air release.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "2",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain dump-valve configuration and vertical reference point."
    },
    {
      "claim_id": "C010",
      "claim": "Hendrickson also prints 2.5–3.2 inches for deck lowering on page 3.",
      "claim_type": "primary_source_required",
      "status": "publishable_source_difference",
      "source_ids": "2",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep source difference visible; do not invent reconciliation or replace page 1 figure."
    },
    {
      "claim_id": "C011",
      "claim": "The manufacturer describes typical tire deflection of 1–1.5 inches.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "2",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Vertical contribution, not horizontal gap."
    },
    {
      "claim_id": "C012",
      "claim": "Mechanical-spring trailer drop may reach 1.75 inches at the axle in the manufacturer description.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "2",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain up-to qualifier and axle reference."
    },
    {
      "claim_id": "C013",
      "claim": "Some air-suspension configurations can drop more than 3.5 inches at the axle.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "2",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain no-dump/no-deck-lock configuration; no general average."
    },
    {
      "claim_id": "C014",
      "claim": "Tom Berg's September 17, 2012 article reports four inches after three forklift trips.",
      "claim_type": "current_verification_required",
      "status": "publishable_attribution_only",
      "source_ids": "3",
      "source_urls": "https://www.truckinginfo.com/articles/preventing-dock-walk",
      "assessment_date": "2026-09-11",
      "publication_decision": "Publish as verified reporting language, not an independently verified measurement."
    },
    {
      "claim_id": "C015",
      "claim": "The reported demonstration involved Reyco Granning and paper-roll loading.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "3",
      "source_urls": "https://www.truckinginfo.com/articles/preventing-dock-walk",
      "assessment_date": "2026-09-11",
      "publication_decision": "Attribute to the article; do not assert direct footage verification."
    },
    {
      "claim_id": "C016",
      "claim": "Original demonstration setup and measurement are independently established.",
      "claim_type": "primary_source_required",
      "status": "not_established_not_asserted",
      "source_ids": "3",
      "source_urls": "https://www.truckinginfo.com/articles/preventing-dock-walk",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not assert; preserve explicit evidence limitation."
    },
    {
      "claim_id": "C017",
      "claim": "Four divided by three establishes a dependable creep-per-trip rate.",
      "claim_type": "editorial_judgment",
      "status": "rejected",
      "source_ids": "3",
      "source_urls": "https://www.truckinginfo.com/articles/preventing-dock-walk",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not calculate or promote such a rate."
    },
    {
      "claim_id": "C018",
      "claim": "The movement rows establish a universal safe operating gap.",
      "claim_type": "primary_source_required",
      "status": "rejected",
      "source_ids": "2;3;5;6;22",
      "source_urls": "https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf;https://www.truckinginfo.com/articles/preventing-dock-walk;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015;https://www.ccohs.ca/oshanswers/safety_haz/forklift/loading.html",
      "assessment_date": "2026-09-11",
      "publication_decision": "State that they establish no such threshold."
    },
    {
      "claim_id": "C019",
      "claim": "The current compilation contains seven movement records and four selected incident records.",
      "claim_type": "reproducible_compilation_count",
      "status": "publishable",
      "source_ids": "",
      "source_urls": "",
      "assessment_date": "2026-09-11",
      "publication_decision": "Count generated rows; selection is purposive, not representative."
    },
    {
      "claim_id": "C020",
      "claim": "2004 investigation and inspection identifiers are 201311214 and 306741307.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "4",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain text identifiers, not numerical conversion."
    },
    {
      "claim_id": "C021",
      "claim": "The 2004 event date is May 17, 2004.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "4",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
      "assessment_date": "2026-09-11",
      "publication_decision": "Use event date, not inspection-open date."
    },
    {
      "claim_id": "C022",
      "claim": "The 2004 abstract explicitly describes creep, a forklift fall and hospitalized lacerations.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "4",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not infer a detailed engineering cause."
    },
    {
      "claim_id": "C023",
      "claim": "The cited 2004 abstract establishes a city or county.",
      "claim_type": "primary_source_required",
      "status": "not_established_not_asserted",
      "source_ids": "4",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214",
      "assessment_date": "2026-09-11",
      "publication_decision": "Leave geography blank."
    },
    {
      "claim_id": "C024",
      "claim": "The 2021 identifiers are 141677.015 and 1567163.015; event date December 7, 2021.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "5",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve both identifiers and event date."
    },
    {
      "claim_id": "C025",
      "claim": "Kaukauna, Wisconsin is the inspection-site address for the 2021 record.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "5",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not represent independent accident geocoding."
    },
    {
      "claim_id": "C026",
      "claim": "The 2021 narrative describes wedging and injuries resulting in paralysis.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "5",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve outcome and do not establish causation not in narrative."
    },
    {
      "claim_id": "C027",
      "claim": "The 2021 movement is definitively trailer creep.",
      "claim_type": "editorial_judgment",
      "status": "rejected",
      "source_ids": "5",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Code separation_mechanism_unspecified."
    },
    {
      "claim_id": "C028",
      "claim": "The 2018 identifiers are 107330.015 and 1320248.015; event date June 4, 2018.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve identifiers and event date."
    },
    {
      "claim_id": "C029",
      "claim": "Belcamp, Maryland is the inspection-site address for the 2018 record.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Label geography basis explicitly."
    },
    {
      "claim_id": "C030",
      "claim": "The 2018 narrative identifies driver departure and foot fractures.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Code driver_departure; no inferred creep."
    },
    {
      "claim_id": "C031",
      "claim": "The Maryland narrative and structured field disagree about hospitalization.",
      "claim_type": "primary_source_required",
      "status": "publishable_source_conflict",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain both fields; no definitive hospitalization resolution claimed."
    },
    {
      "claim_id": "C032",
      "claim": "The Maryland interviews reported red driver and green forklift-operator signals.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "6",
      "source_urls": "https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not infer design, hardware condition or complete operating sequence."
    },
    {
      "claim_id": "C033",
      "claim": "The 2001 identifiers are 200461168 and 302925896; event date January 2, 2001.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "7",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve identifiers and event date."
    },
    {
      "claim_id": "C034",
      "claim": "The 2001 narrative describes rollback toward dock and fatal crushing.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "7",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "assessment_date": "2026-09-11",
      "publication_decision": "Comparator only; not creep."
    },
    {
      "claim_id": "C035",
      "claim": "The cited 2001 abstract establishes a local event geography.",
      "claim_type": "primary_source_required",
      "status": "not_established_not_asserted",
      "source_ids": "7",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep location blank rather than importing a headquarters address."
    },
    {
      "claim_id": "C036",
      "claim": "The incident codebook contains four editorial mechanism categories.",
      "claim_type": "reproducible_editorial_classification",
      "status": "publishable",
      "source_ids": "4;5;6;7",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015;https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "assessment_date": "2026-09-11",
      "publication_decision": "Codes are editorial, not official agency findings."
    },
    {
      "claim_id": "C037",
      "claim": "One record in each category can establish relative accident frequency.",
      "claim_type": "editorial_judgment",
      "status": "rejected",
      "source_ids": "4;5;6;7",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015;https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168",
      "assessment_date": "2026-09-11",
      "publication_decision": "Explain why purposive contrast cases cannot establish rates."
    },
    {
      "claim_id": "C038",
      "claim": "SafeRack displays April 24, 2026 and uses creep-specific wording for the numerator.",
      "claim_type": "current_verification_required",
      "status": "publishable_wording_audit",
      "source_ids": "9",
      "source_urls": "https://saferack.com/glossary/trailer-creep/",
      "assessment_date": "2026-09-11",
      "publication_decision": "Evidence of publisher wording only."
    },
    {
      "claim_id": "C039",
      "claim": "SafeRack generalizes the figure to a share of all fatal loading-dock accidents.",
      "claim_type": "current_verification_required",
      "status": "publishable_wording_audit",
      "source_ids": "9",
      "source_urls": "https://saferack.com/glossary/trailer-creep/",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not adopt that population claim."
    },
    {
      "claim_id": "C040",
      "claim": "The two articles prove a direct copying chain.",
      "claim_type": "editorial_judgment",
      "status": "rejected",
      "source_ids": "8;9",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents;https://saferack.com/glossary/trailer-creep/",
      "assessment_date": "2026-09-11",
      "publication_decision": "State wording comparison, not copying-chain proof."
    },
    {
      "claim_id": "C041",
      "claim": "Allen reports historical FCIS coverage of about 28 percent of BLS occupational fatalities.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve attribution; do not treat as verified current capture rate or extrapolate."
    },
    {
      "claim_id": "C042",
      "claim": "The original FCIS extract and inclusion decisions have been reproduced here.",
      "claim_type": "primary_source_required",
      "status": "not_established_not_asserted",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "State that no independent reconstruction is supplied."
    },
    {
      "claim_id": "C043",
      "claim": "Allen switches wording from 96 incidents to 96 fatalities.",
      "claim_type": "primary_source_required",
      "status": "publishable_source_difference",
      "source_ids": "8",
      "source_urls": "https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents",
      "assessment_date": "2026-09-11",
      "publication_decision": "Retain denominator wording limitation; do not assume one fatality per incident."
    },
    {
      "claim_id": "C044",
      "claim": "Loading forces and suspension motion are discussed in manufacturer and original reporting sources.",
      "claim_type": "primary_source_required",
      "status": "publishable_attribution_only",
      "source_ids": "1;2;3",
      "source_urls": "https://www.ritehite.com/en/am/solutions/solutions-by-need/loading-dock-safety-and-security/loading-dock-accidents;https://www.hendrickson-intl.com/getattachment/f6ceafaa-3d63-42fc-ae8d-440c07c6b120/L816.pdf;https://www.truckinginfo.com/articles/preventing-dock-walk",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep mechanisms distinct; original report is not a test of every trailer."
    },
    {
      "claim_id": "C045",
      "claim": "Vehicle restraint, trailer support, dockboard securement and communication have distinct functions.",
      "claim_type": "editorial_judgment",
      "status": "publishable",
      "source_ids": "10;11;14;22",
      "source_urls": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178;https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26;https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07;https://www.ccohs.ca/oshanswers/safety_haz/forklift/loading.html",
      "assessment_date": "2026-09-11",
      "publication_decision": "Functional comparison, not verified device-performance ranking."
    },
    {
      "claim_id": "C046",
      "claim": "An unsafe developing gap is a stop condition in CCOHS guidance revised July 26, 2022.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "22",
      "source_urls": "https://www.ccohs.ca/oshanswers/safety_haz/forklift/loading.html",
      "assessment_date": "2026-09-11",
      "publication_decision": "Identify Canadian guidance; no Kentucky-law substitution or hazardous recovery instructions."
    },
    {
      "claim_id": "C047",
      "claim": "1910.178(k)(1) contains brakes and rear-wheel-chock language.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "10;13;14",
      "source_urls": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178;https://www.osha.gov/laws-regs/standardinterpretations/2005-11-08;https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07",
      "assessment_date": "2026-09-11",
      "publication_decision": "Read with relevant federal interpretation scope."
    },
    {
      "claim_id": "C048",
      "claim": "1910.178(m)(7) addresses brakes, blocks, uncoupled support and floor checks.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "10",
      "source_urls": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-N/section-1910.178",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not convert to a proprietary-product mandate."
    },
    {
      "claim_id": "C049",
      "claim": "1910.26(c) addresses portable dockboard securement and its infeasibility provision.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "11",
      "source_urls": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep distinct from vehicle movement."
    },
    {
      "claim_id": "C050",
      "claim": "1910.26(d) addresses preventing transport-vehicle movement while employees are on dockboards.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "11",
      "source_urls": "https://www.ecfr.gov/current/title-29/subtitle-B/chapter-XVII/part-1910/subpart-D/section-1910.26",
      "assessment_date": "2026-09-11",
      "publication_decision": "Keep paragraph citation correct."
    },
    {
      "claim_id": "C051",
      "claim": "49 CFR 393.41 contains vehicle-category-specific parking-brake requirements.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "12",
      "source_urls": "https://www.ecfr.gov/current/title-49/subtitle-B/chapter-III/subchapter-B/part-393/subpart-C/section-393.41",
      "assessment_date": "2026-09-11",
      "publication_decision": "Not a blanket dock-employer exemption."
    },
    {
      "claim_id": "C052",
      "claim": "November 8, 2005 OSHA interpretation distinguishes CMV and non-CMV chocking enforcement.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "13",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2005-11-08",
      "assessment_date": "2026-09-11",
      "publication_decision": "Historical published federal interpretation, not a site determination."
    },
    {
      "claim_id": "C053",
      "claim": "March 7, 2011 interpretation includes employers that do not own, operate or lease CMVs.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "14",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not paraphrase as ownership alone."
    },
    {
      "claim_id": "C054",
      "claim": "March 7, 2011 interpretation withdraws the March 4, 1998 Blumenthal letter.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "14;16",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2011-03-07;https://www.osha.gov/laws-regs/standardinterpretations/1998-03-04",
      "assessment_date": "2026-09-11",
      "publication_decision": "Identify historical letter as withdrawn."
    },
    {
      "claim_id": "C055",
      "claim": "September 14, 2005 USPS interpretation assumes USPS-owned vehicles and discusses qualifying alternatives.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "17",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2005-09-14",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve fact-specific scope."
    },
    {
      "claim_id": "C056",
      "claim": "June 14, 2011 letter states federal jurisdiction limits are not directly applicable to State Plans.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "15",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2011-06-14",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not apply federal preemption conclusion automatically to Kentucky."
    },
    {
      "claim_id": "C057",
      "claim": "803 KAR 2:313 incorporates July 1, 2016 Subpart N plus specified November 18, 2016 revisions.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "18",
      "source_urls": "https://apps.legislature.ky.gov/law/kar/titles/803/002/313/",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve both dates and state definitions."
    },
    {
      "claim_id": "C058",
      "claim": "803 KAR 2:303 incorporates July 1, 2015 Subpart D plus specified November 18, 2016 revisions.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "19",
      "source_urls": "https://apps.legislature.ky.gov/law/kar/titles/803/002/303/",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve both dates and state definitions."
    },
    {
      "claim_id": "C059",
      "claim": "Kentucky OSH page provides records routes and states federal policies may or may not be adopted.",
      "claim_type": "current_verification_required",
      "status": "publishable",
      "source_ids": "20",
      "source_urls": "https://elc.ky.gov/workplace-standards/Pages/OSH-Compliance.aspx",
      "assessment_date": "2026-09-11",
      "publication_decision": "Use issuing office; no phone number or commercial routing on page."
    },
    {
      "claim_id": "C060",
      "claim": "This review resolves Kentucky-specific enforcement for every CMV/dock-employer relationship.",
      "claim_type": "primary_source_required",
      "status": "not_established_not_asserted",
      "source_ids": "15;20",
      "source_urls": "https://www.osha.gov/laws-regs/standardinterpretations/2011-06-14;https://elc.ky.gov/workplace-standards/Pages/OSH-Compliance.aspx",
      "assessment_date": "2026-09-11",
      "publication_decision": "Publish the jurisdiction limit, not an unsupported Kentucky conclusion."
    },
    {
      "claim_id": "C061",
      "claim": "May 2025 BLS metro shares are 13.2 percent locally and 8.8 percent nationally.",
      "claim_type": "current_verification_required",
      "status": "publishable",
      "source_ids": "21",
      "source_urls": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "Occupation shares, not accident rates; denominator is respective total employment."
    },
    {
      "claim_id": "C062",
      "claim": "BLS estimates 90,400 broad-group jobs, 4,230 industrial truck/tractor operators and 10,820 heavy/tractor-trailer drivers.",
      "claim_type": "current_verification_required",
      "status": "publishable",
      "source_ids": "21",
      "source_urls": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "Detailed rows are included in broad group; do not add them to its total."
    },
    {
      "claim_id": "C063",
      "claim": "BLS release date is July 10, 2026; reference period is May 2025.",
      "claim_type": "current_verification_required",
      "status": "publishable",
      "source_ids": "21",
      "source_urls": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "Preserve release/observation distinction."
    },
    {
      "claim_id": "C064",
      "claim": "BLS geography is cross-state Louisville/Jefferson County KY-IN metro, not Jefferson County alone.",
      "claim_type": "primary_source_required",
      "status": "publishable",
      "source_ids": "21",
      "source_urls": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "Do not use as county accident denominator."
    },
    {
      "claim_id": "C065",
      "claim": "The rounded-share difference is 4.4 percentage points.",
      "claim_type": "reproducible_calculation",
      "status": "publishable",
      "source_ids": "21",
      "source_urls": "https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "Compute 13.2 minus 8.8; no inferred injury-risk difference."
    },
    {
      "claim_id": "C066",
      "claim": "The compilation supplies an annual U.S., Kentucky or Jefferson County creep count, trend, or equipment-effectiveness estimate.",
      "claim_type": "primary_source_required",
      "status": "rejected",
      "source_ids": "4;5;6;7;8;21",
      "source_urls": "https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=201311214;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1567163.015;https://www.osha.gov/ords/imis/establishment.inspection_detail?id=1320248.015;https://www.osha.gov/ords/imis/accidentsearch.accident_detail?id=200461168;https://www.mhlnews.com/archive/article/22042523/prevent-trailer-dock-separation-incidents;https://www.bls.gov/regions/southeast/news-release/occupationalemploymentandwages_louisville.htm",
      "assessment_date": "2026-09-11",
      "publication_decision": "No such estimates published; missing information is not zero."
    }
  ],
  "incident_codebook": [
    {
      "code": "explicit_creep_description",
      "evidence_required": "Source explicitly describes creep",
      "does_not_establish": "Engineering cause or quantified movement rate"
    },
    {
      "code": "separation_mechanism_unspecified",
      "evidence_required": "Movement away without an established mechanism",
      "does_not_establish": "Creep or driver departure"
    },
    {
      "code": "driver_departure",
      "evidence_required": "Driver movement away before loading/unloading completes",
      "does_not_establish": "Cause of other separation incidents"
    },
    {
      "code": "rollback_toward_dock",
      "evidence_required": "Narrative movement toward dock",
      "does_not_establish": "Creep away from dock"
    }
  ],
  "evidence_limits": [
    {
      "id": "limit-fcis",
      "status": "Not independently reproduced",
      "question": "Can the 2012 FCIS extract and classifications be reproduced?",
      "needed": "Original query/export or a documented reconstruction matching inclusion decisions",
      "source_ids": [
        "8"
      ]
    },
    {
      "id": "limit-demonstration",
      "status": "Published account verified; test setup not independently established",
      "question": "What conditions produced the reported four-inch demonstration?",
      "needed": "Original footage and sufficient test documentation",
      "source_ids": [
        "3"
      ]
    },
    {
      "id": "limit-hospitalization",
      "status": "Conflicting primary-source fields retained",
      "question": "Which Maryland hospitalization field is correct?",
      "needed": "Agency correction or underlying case record resolving the disagreement",
      "source_ids": [
        "6"
      ]
    },
    {
      "id": "limit-kentucky",
      "status": "No Kentucky-specific determination made",
      "question": "What policy governs a particular CMV and dock-employer relationship?",
      "needed": "Applicable state authority or official interpretation addressing that relationship",
      "source_ids": [
        "15",
        "20"
      ]
    }
  ],
  "download_files": {
    "movement": "trailer-creep-movement-evidence-2026-09-11.csv",
    "incidents": "trailer-creep-incident-register-2026-09-11.csv",
    "wording": "trailer-creep-statistic-audit-2026-09-11.csv",
    "regulatory": "trailer-creep-regulatory-crosswalk-2026-09-11.csv",
    "occupations": "louisville-metro-occupation-context-2026-09-11.csv",
    "sources": "trailer-creep-sources-2026-09-11.csv",
    "claims": "trailer-creep-claim-ledger-2026-09-11.csv",
    "json": "trailer-creep-evidence-2026-09-11.json"
  }
}
