{ "name": "Truck detention statistics: source register and historical carrier-mix reaggregation", "version": "2026-09-11", "prepared_date": "2026-09-11", "canonical_page": "https://louisvilledockdoorrepair.com/research/truck-detention-statistics/", "creator": "Louisville Dock Door Repair", "description": "Original compilation and arithmetic on published data; not original truck-stop observations.", "sources": [ { "source_id": 1, "publisher": "Federal Motor Carrier Safety Administration", "title": "Driver Detention Times in Commercial Motor Vehicle Operations", "date": "2014-12", "url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 2, "publisher": "American Transportation Research Institute", "title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "date": "2024-09-10", "url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "depth": "Original issuer release; 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safety appendix text and relevant page images checked", "locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 5, "publisher": "U.S. Government Accountability Office", "title": "Commercial Motor Carriers: More Could Be Done to Determine Impact of Excessive Loading and Unloading Wait Times on Hours of Service Violations", "date": "2011-01-26", "url": "https://www.gao.gov/assets/a315300.html", "depth": "Full official report text; survey timing, bases and results checked", "locator": "GAO-11-198; scope and methodology; interview results", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 6, "publisher": "DAT Solutions", "title": "63 Percent of Drivers are Detained for More Than 3 Hours Per Stop: DAT Solutions", "date": "2016-07-14", "url": "https://www.dat.com/company/news-events/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions", "depth": "Issuer release; conflicting carrier sample count preserved", "locator": "257 carriers in DAT-hosted version", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 7, "publisher": "DAT Solutions, distributed through PR Newswire", "title": "63 Percent of Drivers are Detained for More Than 3 Hours Per Stop: DAT Solutions", "date": "2016-07-14", "url": "https://www.prnewswire.com/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions-300298617.html", "depth": "Issuer-distributed release; conflicting carrier sample count preserved", "locator": "247 carriers in wire version", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 8, "publisher": "U.S. Department of Labor, Wage and Hour Division", "title": "Fact Sheet #22: Hours Worked Under the Fair Labor Standards Act (FLSA)", "date": "2008-07", "url": "https://www.dol.gov/agencies/whd/fact-sheets/22-flsa-hours-worked", "depth": "Official guidance checked on verification date", "locator": "Waiting Time", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "revision" }, { "source_id": 9, "publisher": "U.S. Department of Transportation", "title": "Kentucky Freight Plan", "date": "2023-12-05", "url": "https://www.transportation.gov/mission/office-secretary/office-policy/freight/freight-infrastructure-and-policy/kentucky-freight", "depth": "Landing page only; linked full 2022 plan was not successfully retrieved", "locator": "2022 plan listed; directory last updated 2023-12-05", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "page_last_updated" }, { "source_id": 10, "publisher": "Kentuckiana Regional Planning & Development Agency", "title": "Freight Planning", "date": "", "url": "https://www.kipda.org/transportation/major-functions/freight-planning/", "depth": "Directory only; linked full regional study was not successfully retrieved", "locator": "Regional freight study described as completed February 2019", "verified_date": "2026-09-11", "supplementary_url": "https://www.kipda.org/", "date_type": "not_stated" }, { "source_id": 11, "publisher": "Federal Motor Carrier Safety Administration", "title": "Impact of Driver Detention Time on Safety and Operations", "date": "2025-10-03", "url": "https://www.fmcsa.dot.gov/research-and-analysis/impact-driver-detention-time-safety-and-operations", "depth": "Project description checked; no new outcome report located on inspected page", "locator": "Last-updated date; project objectives", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "page_last_updated" }, { "source_id": 12, "publisher": "Virginia Tech Transportation Institute", "title": "Impact of Driver Detention Time on Safety and Operations", "date": "", "url": "https://www.vtti.vt.edu/driver-detention/index.html", "depth": "Study participation and design page; no final result on inspected page", "locator": "Research purpose and participation information", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "not_stated" }, { "source_id": 13, "publisher": "Federal Motor Carrier Safety Administration", "title": "FMCSA Advances Hours of Service Pilot Programs for America’s Truck Drivers", "date": "2026-08-27", "url": "https://www.fmcsa.dot.gov/newsroom/fmcsa-advances-hours-service-pilot-programs-americas-truck-drivers", "depth": "Original official bulletin checked", "locator": "Split Duty Period pre-test and planned 2027 launch", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "publication" }, { "source_id": 14, "publisher": "U.S. Department of Transportation / Federal Motor Carrier Safety Administration", "title": "Privacy Impact Assessment: Impact of Driver Detention Time on Safety and Operations (Detention Time)", "date": "2024-06-24", "url": "https://www.transportation.gov/sites/dot.gov/files/2024-06/Privacy%20-%20FMCSA%20-%20Detention%20Time%20-%20PIA%20-%202024.pdf", "depth": "Original project document checked", "locator": "Historical measurement limits and new data collection design; accompanying DOT page dated June 24, 2024", "verified_date": "2026-09-11", "supplementary_url": "https://www.transportation.gov/resources/individuals/privacy/impact-driver-detention-time-safety-and-operations-detention-time", "date_type": "accompanying_page_last_updated" }, { "source_id": 15, "publisher": "DAT iQ Help Center", "title": "DAT Shipper Spot Rate FAQ", "date": "", "url": "https://iq.support.dat.com/9-industry-information-0ab635a7/dat-shipper-spot-rate-faq-89ebe8cd", "depth": "Original provider help page; existing spot-market definition checked", "locator": "What is a Shipper Spot Rate?", "verified_date": "2026-09-11", "supplementary_url": "", "date_type": "not_stated" } ], "cohorts": [ { "cohort_id": "for_hire_truckload", "operation_type": "For-hire truckload", "carriers": 18, "detained_stops": 108302, "not_detained_stops": 407846, "included_stops": 516148, "detained_share_percent": "20.982741384254", "display_share_percent": "20.98", "row_type": "base", "component_ids": "for_hire_truckload", "data_period": "Vendor A 2013-01/2013-06; Vendor B 2012-12/2013-05", "definition": "Included facility stop lasting >2 hours; retained duration window 0.5 to 10 hours", "method": "Published counts reaggregated; unweighted by national carrier population", "source_id": 1, "source_locator": "Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "cohort_id": "for_hire_ltl", "operation_type": "For-hire less-than-truckload", "carriers": 6, "detained_stops": 4323, "not_detained_stops": 42321, "included_stops": 46644, "detained_share_percent": "9.268073064060", "display_share_percent": "9.27", "row_type": "base", "component_ids": "for_hire_ltl", "data_period": "Vendor A 2013-01/2013-06; Vendor B 2012-12/2013-05", "definition": "Included facility stop lasting >2 hours; retained duration window 0.5 to 10 hours", "method": "Published counts reaggregated; unweighted by national carrier population", "source_id": 1, "source_locator": "Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "cohort_id": "private", "operation_type": "Private", "carriers": 7, "detained_stops": 40478, "not_detained_stops": 745627, "included_stops": 786105, "detained_share_percent": "5.149184905324", "display_share_percent": "5.15", "row_type": "base", "component_ids": "private", "data_period": "Vendor A 2013-01/2013-06; Vendor B 2012-12/2013-05", "definition": "Included facility stop lasting >2 hours; retained duration window 0.5 to 10 hours", "method": "Published counts reaggregated; unweighted by national carrier population", "source_id": 1, "source_locator": "Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "cohort_id": "for_hire_combined", "operation_type": "For-hire combined", "carriers": 24, "detained_stops": 112625, "not_detained_stops": 450167, "included_stops": 562792, "detained_share_percent": "20.011833856913", "display_share_percent": "20.01", "row_type": "overlapping_summary", "component_ids": "for_hire_truckload;for_hire_ltl", "data_period": "Vendor A 2013-01/2013-06; Vendor B 2012-12/2013-05", "definition": "Included facility stop lasting >2 hours; retained duration window 0.5 to 10 hours", "method": "Published counts reaggregated; unweighted by national carrier population", "source_id": 1, "source_locator": "Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "cohort_id": "all_included", "operation_type": "All included operations", "carriers": 31, "detained_stops": 153103, "not_detained_stops": 1195794, "included_stops": 1348897, "detained_share_percent": "11.350236526584", "display_share_percent": "11.35", "row_type": "overlapping_summary", "component_ids": "for_hire_truckload;for_hire_ltl;private", "data_period": "Vendor A 2013-01/2013-06; Vendor B 2012-12/2013-05", "definition": "Included facility stop lasting >2 hours; retained duration window 0.5 to 10 hours", "method": "Published counts reaggregated; unweighted by national carrier population", "source_id": 1, "source_locator": "Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" } ], "statistics": [ { "id": "FMCSA_for_hire_truckload", "measure": "Detained share of included stops", "value": "20.982741384254", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "516148 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Historical vendor sample; overlapping summary rows are not additive; not a national or local population estimate", "verification_tier": "★" }, { "id": "FMCSA_for_hire_ltl", "measure": "Detained share of included stops", "value": "9.268073064060", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "46644 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Historical vendor sample; overlapping summary rows are not additive; not a national or local population estimate", "verification_tier": "★" }, { "id": "FMCSA_private", "measure": "Detained share of included stops", "value": "5.149184905324", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "786105 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Historical vendor sample; overlapping summary rows are not additive; not a national or local population estimate", "verification_tier": "★" }, { "id": "FMCSA_for_hire_combined", "measure": "Detained share of included stops", "value": "20.011833856913", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "562792 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Historical vendor sample; overlapping summary rows are not additive; not a national or local population estimate", "verification_tier": "★" }, { "id": "FMCSA_all_included", "measure": "Detained share of included stops", "value": "11.350236526584", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "1348897 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Historical vendor sample; overlapping summary rows are not additive; not a national or local population estimate", "verification_tier": "★" }, { "id": "FMCSA_gap", "measure": "For-hire minus all-included share", "value": "8.661597330329", "unit": "percentage points", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "", "method": "Difference computed before rounding", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "Within-sample composition comparison, not time trend", "verification_tier": "★" }, { "id": "FMCSA_private_weight", "measure": "Private-fleet share of included stops", "value": "58.277614969861", "unit": "percent", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "1348897 included stops", "method": "Calculation from published counts", "source_id": 1, "source_title": "Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "FMCSA-RRR-13-060; methods pp.12–14; Tables 6 and 14, printed pp.17 and 38", "source_url": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf", "verification_depth": "Report text and images of Tables 6 and 14 checked; calculation reproduced", "verified_date": "2026-09-11", "limitations": "", "verification_tier": "★" }, { "id": "ATRI_overall", "measure": "Driver-reported detained stop share", "value": "39.3", "unit": "percent", "qualifier": "", "data_period": "2023", "denominator": "Stops reported for named group", "method": "Original issuer summary of research", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Full report and subgroup sample sizes not independently verified; exact threshold not harmonized with FMCSA", "verification_tier": "●" }, { "id": "ATRI_reefer", "measure": "Refrigerated-trailer driver-reported detained stop share", "value": "56.2", "unit": "percent", "qualifier": "", "data_period": "2023", "denominator": "Stops reported for named group", "method": "Original issuer summary of research", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Full report and subgroup sample sizes not independently verified; exact threshold not harmonized with FMCSA", "verification_tier": "●" }, { "id": "ATRI_women", "measure": "Women driver-reported detained stop share", "value": "49.1", "unit": "percent", "qualifier": "", "data_period": "2023", "denominator": "Stops reported for named group", "method": "Original issuer summary of research", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Full report and subgroup sample sizes not independently verified; exact threshold not harmonized with FMCSA", "verification_tier": "●" }, { "id": "ATRI_spot", "measure": "Spot-market fleet detained stop share", "value": "42.5", "unit": "percent", "qualifier": "", "data_period": "2023", "denominator": "Stops reported for named group", "method": "Original issuer summary of research", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Full report and subgroup sample sizes not independently verified; exact threshold not harmonized with FMCSA", "verification_tier": "●" }, { "id": "ATRI_hours", "measure": "For-hire annual detention hours", "value": "135000000", "unit": "hours", "qualifier": ">", "data_period": "2023", "denominator": "U.S. for-hire trucking", "method": "Industry estimate in original issuer release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "", "verification_tier": "●" }, { "id": "ATRI_annual_low", "measure": "Lower sector endpoint of annual driver detention", "value": "117", "unit": "hours per year", "qualifier": "", "data_period": "2023", "denominator": "Driver, depending on sector", "method": "Industry estimate in issuer release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Not assigned to a specific sector without full-report verification", "verification_tier": "●" }, { "id": "ATRI_annual_high", "measure": "Upper sector endpoint of annual driver detention", "value": "209", "unit": "hours per year", "qualifier": "", "data_period": "2023", "denominator": "Driver, depending on sector", "method": "Industry estimate in issuer release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Not assigned to a specific sector without full-report verification", "verification_tier": "●" }, { "id": "ATRI_direct", "measure": "Direct expenses", "value": "3600000000", "unit": "USD", "qualifier": "", "data_period": "2023", "denominator": "", "method": "Economic estimate in issuer release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Not inflation-adjusted; not independently added to productivity estimate", "verification_tier": "●" }, { "id": "ATRI_productivity", "measure": "Lost productivity", "value": "11500000000", "unit": "USD", "qualifier": "", "data_period": "2023", "denominator": "", "method": "Economic estimate in issuer release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Not invoice revenue or driver wages; not inflation-adjusted", "verification_tier": "●" }, { "id": "ATRI_billing", "measure": "Fleets charging detention fees", "value": "94.5", "unit": "percent", "qualifier": "", "data_period": "Not separately stated in inspected release", "denominator": "Fleets", "method": "Published result", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Published 2024; do not automatically assign 2023 observation year", "verification_tier": "●" }, { "id": "ATRI_collection", "measure": "Detention invoices paid", "value": "50", "unit": "percent", "qualifier": "<", "data_period": "Not separately stated in inspected release", "denominator": "Detention invoices", "method": "Published result", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Not percentage of fleets receiving any payment; not a dollar collection ratio", "verification_tier": "●" }, { "id": "ATRI_speed", "measure": "Average speed difference for detained versus non-detained trucks", "value": "14.6", "unit": "percent", "qualifier": "", "data_period": "Not separately stated in inspected release", "denominator": "", "method": "GPS-analysis result described in original release", "source_id": 2, "source_title": "New Research Documents Substantial Financial and Safety Impacts from Truck Driver Detention", "publisher": "American Transportation Research Institute", "source_publication_date": "2024-09-10", "source_locator": "Release findings; not full report methods", "source_url": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verification_depth": "Original issuer release; full report not successfully retrieved", "verified_date": "2026-09-11", "limitations": "Association; no proof of causality or speed-limit violation", "verification_tier": "●" }, { "id": "FMCSA_extra", "measure": "Mean additional detention beyond two hours", "value": "1.4", "unit": "hours", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "Detained stops only", "method": "Published result", "source_id": 3, "source_title": "Research Brief: Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "Results and limitations", "source_url": "https://rosap.ntl.bts.gov/view/dot/194/dot_194_DS1.pdf", "verification_depth": "Two-page primary research brief; page 1 text and image checked", "verified_date": "2026-09-11", "limitations": "Not mean across all facility visits", "verification_tier": "★" }, { "id": "FMCSA_total_detained", "measure": "Corresponding total facility time at detained stops", "value": "3.4", "unit": "hours", "qualifier": "", "data_period": "2012-12/2013-06", "denominator": "Detained stops only", "method": "Published result", "source_id": 3, "source_title": "Research Brief: Driver Detention Times in Commercial Motor Vehicle Operations", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2014-12", "source_locator": "Results and limitations", "source_url": "https://rosap.ntl.bts.gov/view/dot/194/dot_194_DS1.pdf", "verification_depth": "Two-page primary research brief; page 1 text and image checked", "verified_date": "2026-09-11", "limitations": "Two-hour threshold plus reported additional detention; not all-visit mean", "verification_tier": "★" }, { "id": "GAO_month", "measure": "Drivers reporting detention within prior month", "value": "204", "unit": "drivers", "qualifier": "", "data_period": "2010-07/2010-08", "denominator": "302 interviewed drivers", "method": "Published result", "source_id": 5, "source_title": "Commercial Motor Carriers: More Could Be Done to Determine Impact of Excessive Loading and Unloading Wait Times on Hours of Service Violations", "publisher": "U.S. Government Accountability Office", "source_publication_date": "2011-01-26", "source_locator": "GAO-11-198; scope and methodology; interview results", "source_url": "https://www.gao.gov/assets/a315300.html", "verification_depth": "Full official report text; survey timing, bases and results checked", "verified_date": "2026-09-11", "limitations": "GAO reports approximately 68%; nongeneralizable sample", "verification_tier": "★" }, { "id": "GAO_fortnight", "measure": "Drivers reporting detention within prior two weeks", "value": "178", "unit": "drivers", "qualifier": "", "data_period": "2010-07/2010-08", "denominator": "302 interviewed drivers", "method": "Published result", "source_id": 5, "source_title": "Commercial Motor Carriers: More Could Be Done to Determine Impact of Excessive Loading and Unloading Wait Times on Hours of Service Violations", "publisher": "U.S. Government Accountability Office", "source_publication_date": "2011-01-26", "source_locator": "GAO-11-198; scope and methodology; interview results", "source_url": "https://www.gao.gov/assets/a315300.html", "verification_depth": "Full official report text; survey timing, bases and results checked", "verified_date": "2026-09-11", "limitations": "GAO reports approximately 59%; nongeneralizable sample", "verification_tier": "★" }, { "id": "GAO_prior", "measure": "Drivers reporting any previous detention", "value": "236", "unit": "drivers", "qualifier": "", "data_period": "2010-07/2010-08", "denominator": "302 interviewed drivers", "method": "Published result", "source_id": 5, "source_title": "Commercial Motor Carriers: More Could Be Done to Determine Impact of Excessive Loading and Unloading Wait Times on Hours of Service Violations", "publisher": "U.S. Government Accountability Office", "source_publication_date": "2011-01-26", "source_locator": "GAO-11-198; scope and methodology; interview results", "source_url": "https://www.gao.gov/assets/a315300.html", "verification_depth": "Full official report text; survey timing, bases and results checked", "verified_date": "2026-09-11", "limitations": "Base for discussion of contributing causes", "verification_tier": "★" }, { "id": "GAO_facilities", "measure": "Previously detained drivers citing facility limitations", "value": "43", "unit": "percent", "qualifier": "approximately", "data_period": "2010-07/2010-08", "denominator": "Previously detained drivers in interview sample", "method": "Published result", "source_id": 5, "source_title": "Commercial Motor Carriers: More Could Be Done to Determine Impact of Excessive Loading and Unloading Wait Times on Hours of Service Violations", "publisher": "U.S. Government Accountability Office", "source_publication_date": "2011-01-26", "source_locator": "GAO-11-198; scope and methodology; interview results", "source_url": "https://www.gao.gov/assets/a315300.html", "verification_depth": "Full official report text; survey timing, bases and results checked", "verified_date": "2026-09-11", "limitations": "Staff/equipment/loading bays combined; not share of delays or broken dock doors", "verification_tier": "★" }, { "id": "OIG_crash", "measure": "Expected carrier crash-rate relative change for 15-minute higher mean dwell", "value": "6.2", "unit": "percent", "qualifier": "", "data_period": "2013", "denominator": "", "method": "Modeled association", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not percentage points, individual risk, or causal proof", "verification_tier": "★" }, { "id": "OIG_unfiltered", "measure": "Initial stop observations in safety appendix", "value": "2984340", "unit": "stops", "qualifier": "", "data_period": "Arrivals 2013-01-01/2013-06-30; some departures in early July 2013", "denominator": "", "method": "Historical single-vendor source data", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "Safety appendix, printed p.19", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not the retained analytic stop sample", "verification_tier": "★" }, { "id": "OIG_filtered", "measure": "Retained stop observations in safety appendix", "value": "1052727", "unit": "stops", "qualifier": "", "data_period": "Arrivals 2013-01-01/2013-06-30; some departures in early July 2013", "denominator": "", "method": "Historical sample after 30-minute to 10-hour restriction", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "Safety appendix, printed p.19", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Do not automatically attach this denominator to the economic appendix 21% figure", "verification_tier": "★" }, { "id": "OIG_economic_share", "measure": "Stops exceeding two hours described in economic appendix", "value": "21", "unit": "percent", "qualifier": "approximately", "data_period": "2013", "denominator": "", "method": "Published result", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "Economic appendix, printed pp.59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Exact denominator behind this rounded share not independently reconstructed; not reconciled to 20.01%", "verification_tier": "★" }, { "id": "OIG_driver_total_low", "measure": "Annual driver earnings reduction, lower bound", "value": "1100000000", "unit": "USD per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "OIG_driver_total_high", "measure": "Annual driver earnings reduction, upper bound", "value": "1300000000", "unit": "USD per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "OIG_driver_individual_low", "measure": "Per-driver annual earnings reduction, lower bound", "value": "1281", "unit": "USD per driver per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "OIG_driver_individual_high", "measure": "Per-driver annual earnings reduction, upper bound", "value": "1534", "unit": "USD per driver per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "OIG_carrier_low", "measure": "Annual carrier net-income reduction, lower bound", "value": "250600000", "unit": "USD per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "OIG_carrier_high", "measure": "Annual carrier net-income reduction, upper bound", "value": "302900000", "unit": "USD per year", "qualifier": "", "data_period": "Historical model published 2018; 2013 dwell and other input vintages", "denominator": "For-hire truckload sector", "method": "Economic simulation estimate", "source_id": 4, "source_title": "Estimates Show Commercial Driver Detention Increases Crash Risks and Costs, but Current Data Limit Further Analysis", "publisher": "U.S. Department of Transportation Office of Inspector General", "source_publication_date": "2018-01-31", "source_locator": "ST2018019; printed pp.3–4, 10, 19, 59–60", "source_url": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verification_depth": "Original report; safety appendix text and relevant page images checked", "verified_date": "2026-09-11", "limitations": "Not current prices, not a fresh 2018 census, and not an all-trucking estimate", "verification_tier": "★" }, { "id": "DAT_site_n", "measure": "Carrier sample count in DAT-hosted release", "value": "257", "unit": "carriers", "qualifier": "", "data_period": "Field dates not stated", "denominator": "", "method": "Published version-specific count", "source_id": 6, "source_title": "63 Percent of Drivers are Detained for More Than 3 Hours Per Stop: DAT Solutions", "publisher": "DAT Solutions", "source_publication_date": "2016-07-14", "source_locator": "257 carriers in DAT-hosted version", "source_url": "https://www.dat.com/company/news-events/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions", "verification_depth": "Issuer release; conflicting carrier sample count preserved", "verified_date": "2026-09-11", "limitations": "Conflicts with 247 in same-date DAT-issued wire version; no resolved N", "verification_tier": "●" }, { "id": "DAT_wire_n", "measure": "Carrier sample count in DAT-issued wire release", "value": "247", "unit": "carriers", "qualifier": "", "data_period": "Field dates not stated", "denominator": "", "method": "Published version-specific count", "source_id": 7, "source_title": "63 Percent of Drivers are Detained for More Than 3 Hours Per Stop: DAT Solutions", "publisher": "DAT Solutions, distributed through PR Newswire", "source_publication_date": "2016-07-14", "source_locator": "247 carriers in wire version", "source_url": "https://www.prnewswire.com/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions-300298617.html", "verification_depth": "Issuer-distributed release; conflicting carrier sample count preserved", "verified_date": "2026-09-11", "limitations": "Conflicts with 257 in DAT-hosted release; no resolved N", "verification_tier": "●" }, { "id": "FMCSA_pilot_drivers", "measure": "Split Duty Period pilot pre-test drivers", "value": "9", "unit": "drivers", "qualifier": "", "data_period": "2026-05-18/2026-07-17", "denominator": "", "method": "Completed pre-test reported by agency", "source_id": 13, "source_title": "FMCSA Advances Hours of Service Pilot Programs for America’s Truck Drivers", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2026-08-27", "source_locator": "Split Duty Period pre-test and planned 2027 launch", "source_url": "https://www.fmcsa.dot.gov/newsroom/fmcsa-advances-hours-service-pilot-programs-americas-truck-drivers", "verification_depth": "Original official bulletin checked", "verified_date": "2026-09-11", "limitations": "Not enrollment in the separate detention-data project", "verification_tier": "●" }, { "id": "FMCSA_pilot_carriers", "measure": "Split Duty Period pilot pre-test carriers", "value": "3", "unit": "carriers", "qualifier": "", "data_period": "2026-05-18/2026-07-17", "denominator": "", "method": "Completed pre-test reported by agency", "source_id": 13, "source_title": "FMCSA Advances Hours of Service Pilot Programs for America’s Truck Drivers", "publisher": "Federal Motor Carrier Safety Administration", "source_publication_date": "2026-08-27", "source_locator": "Split Duty Period pre-test and planned 2027 launch", "source_url": "https://www.fmcsa.dot.gov/newsroom/fmcsa-advances-hours-service-pilot-programs-americas-truck-drivers", "verification_depth": "Original official bulletin checked", "verified_date": "2026-09-11", "limitations": "", "verification_tier": "●" } ], "study_comparison": [ { "study": "GAO-11-198", "publication": "2011-01-26", "observation_period": "2010-07/2010-08", "unit": "Interviewed drivers", "measure": "Experienced detention within previous month", "value": "204 of 302; approximately 68%", "comparison_limit": "Respondent prevalence over time is not share of stops; nongeneralizable sample", "source_ids": "5", "source_urls": "https://www.gao.gov/assets/a315300.html", "verified_date": "2026-09-11", "verification_tier": "★" }, { "study": "FMCSA-RRR-13-060", "publication": "2014-12", "observation_period": "Vendor A Jan-Jun 2013; Vendor B Dec 2012-May 2013", "unit": "Filtered facility stops", "measure": "Total recorded stop duration >2 hours", "value": "11.35% all included; 20.01% for-hire after reaggregation", "comparison_limit": "Carrier mix and duration filters determine denominator; not population weighted", "source_ids": "1;3", "source_urls": "https://rosap.ntl.bts.gov/view/dot/193/dot_193_DS1.pdf | https://rosap.ntl.bts.gov/view/dot/194/dot_194_DS1.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "study": "DAT detention survey release", "publication": "2016-07-14", "observation_period": "Exact field dates not stated", "unit": "Carrier survey responses", "measure": "Reported typical detention-duration category", "value": "Headline approximately 63% reporting categories beyond 3 hours", "comparison_limit": "Not percentage of loads; published carrier sample counts conflict", "source_ids": "6;7", "source_urls": "https://www.dat.com/company/news-events/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions | https://www.prnewswire.com/news-releases/63-percent-of-drivers-are-detained-for-more-than-3-hours-per-stop-dat-solutions-300298617.html", "verified_date": "2026-09-11", "verification_tier": "●" }, { "study": "DOT OIG ST2018019", "publication": "2018-01-31", "observation_period": "2013 for dwell/crash analysis; mixed historical economic inputs", "unit": "Historical stop data, carrier-level crash models and economic simulations", "measure": "Expected crash rates and economic outcomes", "value": "6.2% relative expected crash-rate change for 15-minute higher average dwell", "comparison_limit": "Shared data lineage with FMCSA, different analytic selections; not an independent current census", "source_ids": "4", "source_urls": "https://www.oig.dot.gov/sites/default/files/library-items/40_FMCSA%20Driver%20Detention%20Final%20Report_R.pdf", "verified_date": "2026-09-11", "verification_tier": "★" }, { "study": "ATRI detention release", "publication": "2024-09-10", "observation_period": "2023 for headline stop, time and cost figures", "unit": "Driver/fleet summaries and industry estimates", "measure": "Reported detention as described in issuer release", "value": "39.3% reported stop share", "comparison_limit": "Full-report questionnaire, detailed threshold and weighting not independently checked", "source_ids": "2", "source_urls": "https://truckingresearch.org/2024/09/new-research-documents-substantial-financial-and-safety-impacts-from-truck-driver-detention/", "verified_date": "2026-09-11", "verification_tier": "●" } ], "local_evidence_audit": [ { "geography": "Kentucky", "source": "U.S. DOT Kentucky Freight Plan directory", "document_vintage": "2022 plan listed; directory updated 2023-12-05", "material_checked": "Directory page only; full linked plan not retrieved", "detention_rate_verified": "No", "meaning": "No state facility-stop detention rate verified in this bounded review; not proof none exists", "source_url": "https://www.transportation.gov/mission/office-secretary/office-policy/freight/freight-infrastructure-and-policy/kentucky-freight", "verified_date": "2026-09-11", "verification_tier": "●" }, { "geography": "Louisville / Jefferson County, Kentucky", "source": "KIPDA Freight Planning directory", "document_vintage": "Regional study listed as completed February 2019", "material_checked": "Directory page only; full linked study not retrieved", "detention_rate_verified": "No", "meaning": "No county facility-stop rate verified; regional planning geography is not automatically Jefferson County", "source_url": "https://www.kipda.org/transportation/major-functions/freight-planning/", "verified_date": "2026-09-11", "verification_tier": "●" } ], "verification_date": "2026-09-11", "verification_tiers": { "★": "Underlying primary report or data checked; calculations reproduced where applicable", "●": "Original issuer summary, announcement or directory checked; no claim that a full underlying study or linked report was checked" }, "format_notes": { "numeric_strings": "Calculated percentages and statistical values retain their original decimal-string representation; cohort counts remain integers.", "bounds": "Interpret value together with qualifier; > and < are strict bounds, not exact counts.", "summary_rows": "The two summary cohort rows overlap their component base rows; do not sum all five rows.", "dates": "Read source dates with date_type; a last-updated date is not necessarily the original publication date." } }