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This snapshot groups carrier records by the number of driver or vehicle inspections reported in the public SMS feed. Each group’s rate uses total out-of-service findings divided by total inspections, rather than averaging carrier percentages.
Analysis: Truck Safety Research · Publisher: Top Tier Legal LLC · Published October 10, 2026
| Inspections per record | Eligible records | Inspections | Out of service | Rate |
|---|---|---|---|---|
| 1–9 | 289,993 | 898,527 | 105,498 | 11.74% |
| 10–49 | 61,373 | 1,214,506 | 89,548 | 7.37% |
| 50–199 | 11,587 | 1,066,288 | 40,670 | 3.81% |
| 200+ | 2,849 | 1,752,634 | 31,805 | 1.81% |
| Inspections per record | Eligible records | Inspections | Out of service | Rate |
|---|---|---|---|---|
| 1–9 | 261,950 | 724,850 | 203,376 | 28.06% |
| 10–49 | 40,449 | 794,108 | 186,852 | 23.53% |
| 50–199 | 7,478 | 680,036 | 138,004 | 20.29% |
| 200+ | 1,607 | 974,378 | 153,132 | 15.72% |
Source: SMS AB PassProperty (4y6x-dmck). Source publication: 2026-09-13T07:02:59.000Z. Retrieved: 2026-10-10T22:20:32.157Z. The feed reflects a rolling 24-month measurement period; its exact measurement cutoff is not supplied in this analysis.
Coverage is the active interstate and intrastate hazardous-material carriers included in this public passenger/property feed. These are eligible carrier records, not a census of all U.S. trucking companies. A band describes recorded inspections; it does not describe fleet size, miles driven or employee count.
Enforcement selection, operating patterns, exposure and record completeness can differ between groups. Inspection selection is not random. A difference between rates does not demonstrate causation, predict crash risk or establish legal liability. Driver and vehicle inspections check different requirements. This single snapshot cannot establish a time trend.
Downloads remain fixed after publication. A query against the live feed later may return different results.
driver · 1–9 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(driver_insp_total::number)+as+inspections,sum(driver_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=driver_insp_total+is+not+null+AND+driver_oos_insp_total+is+not+null+AND+driver_insp_total+!=+''+AND+driver_oos_insp_total+!=+''+AND+driver_insp_total::number+>=+1+AND+driver_insp_total::number+<+10+AND+driver_oos_insp_total::number+>=+0+AND+driver_oos_insp_total::number+<=+driver_insp_total::number&$limit=1
driver · 10–49 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(driver_insp_total::number)+as+inspections,sum(driver_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=driver_insp_total+is+not+null+AND+driver_oos_insp_total+is+not+null+AND+driver_insp_total+!=+''+AND+driver_oos_insp_total+!=+''+AND+driver_insp_total::number+>=+10+AND+driver_insp_total::number+<+50+AND+driver_oos_insp_total::number+>=+0+AND+driver_oos_insp_total::number+<=+driver_insp_total::number&$limit=1
driver · 50–199 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(driver_insp_total::number)+as+inspections,sum(driver_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=driver_insp_total+is+not+null+AND+driver_oos_insp_total+is+not+null+AND+driver_insp_total+!=+''+AND+driver_oos_insp_total+!=+''+AND+driver_insp_total::number+>=+50+AND+driver_insp_total::number+<+200+AND+driver_oos_insp_total::number+>=+0+AND+driver_oos_insp_total::number+<=+driver_insp_total::number&$limit=1
driver · 200+ aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(driver_insp_total::number)+as+inspections,sum(driver_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=driver_insp_total+is+not+null+AND+driver_oos_insp_total+is+not+null+AND+driver_insp_total+!=+''+AND+driver_oos_insp_total+!=+''+AND+driver_insp_total::number+>=+200+AND+driver_oos_insp_total::number+>=+0+AND+driver_oos_insp_total::number+<=+driver_insp_total::number&$limit=1
vehicle · 1–9 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(vehicle_insp_total::number)+as+inspections,sum(vehicle_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=vehicle_insp_total+is+not+null+AND+vehicle_oos_insp_total+is+not+null+AND+vehicle_insp_total+!=+''+AND+vehicle_oos_insp_total+!=+''+AND+vehicle_insp_total::number+>=+1+AND+vehicle_insp_total::number+<+10+AND+vehicle_oos_insp_total::number+>=+0+AND+vehicle_oos_insp_total::number+<=+vehicle_insp_total::number&$limit=1
vehicle · 10–49 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(vehicle_insp_total::number)+as+inspections,sum(vehicle_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=vehicle_insp_total+is+not+null+AND+vehicle_oos_insp_total+is+not+null+AND+vehicle_insp_total+!=+''+AND+vehicle_oos_insp_total+!=+''+AND+vehicle_insp_total::number+>=+10+AND+vehicle_insp_total::number+<+50+AND+vehicle_oos_insp_total::number+>=+0+AND+vehicle_oos_insp_total::number+<=+vehicle_insp_total::number&$limit=1
vehicle · 50–199 aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(vehicle_insp_total::number)+as+inspections,sum(vehicle_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=vehicle_insp_total+is+not+null+AND+vehicle_oos_insp_total+is+not+null+AND+vehicle_insp_total+!=+''+AND+vehicle_oos_insp_total+!=+''+AND+vehicle_insp_total::number+>=+50+AND+vehicle_insp_total::number+<+200+AND+vehicle_oos_insp_total::number+>=+0+AND+vehicle_oos_insp_total::number+<=+vehicle_insp_total::number&$limit=1
vehicle · 200+ aggregate queryhttps://data.transportation.gov/resource/4y6x-dmck.json?$select=sum(vehicle_insp_total::number)+as+inspections,sum(vehicle_oos_insp_total::number)+as+out_of_service,count(*)+as+carrier_records&$where=vehicle_insp_total+is+not+null+AND+vehicle_oos_insp_total+is+not+null+AND+vehicle_insp_total+!=+''+AND+vehicle_oos_insp_total+!=+''+AND+vehicle_insp_total::number+>=+200+AND+vehicle_oos_insp_total::number+>=+0+AND+vehicle_oos_insp_total::number+<=+vehicle_insp_total::number&$limit=1
Truck Safety Research. “Inspection volume and out-of-service findings in the public SMS feed.” October 10, 2026. FMCSA SMS AB PassProperty, retrieved 2026-10-10T22:20:32.157Z. https://trucksafetyresearch.com/research/sms-inspection-volume-2026-10-10. Retain the inspection population, denominator and snapshot date when quoting a rate.
Feed-wide inspection findings · Corrections and research questions · Editorial standards