About this site

This site shows public U.S. government records about trucking and bus companies: who they are, their safety scores, inspections, crashes, and insurance.

It updates itself automatically whenever the government publishes new data.

Data sources for the curious Every dataset, how often it changes, and when it was last updated here

Everything comes from public FMCSA releases on the DOT Public Data Portal. An automated updater checks each source hourly and re-imports it when FMCSA publishes a new file — daily, weekly, or monthly depending on the dataset. All times below are when this database last imported the file.

Registration

Dataset	Cadence	Rows	Source file	Last updated
Company Census File MCS-150 registration data for every DOT-registered entity. `companies`	daily	4,523,399	Company_Census_File_20261027.csv.gz	2026-10-27T18:32:29.562492+00:00

Inspections

Dataset	Cadence	Rows	Source file	Last updated
Vehicle Inspection File Roadside inspections, 3-year window. One row per inspection. `inspections`	weekly	8,284,557	Vehicle_Inspection_File_20261026.csv.gz	2026-10-26T00:43:00.399121+00:00
Inspections Per Unit Vehicle units examined per inspection (make, plate, VIN). `inspection_units`	weekly	13,811,092	Inspections_Per_Unit_20261026.csv.gz	2026-10-26T00:53:17.115183+00:00
Vehicle Inspections and Violations Each violation cited during an inspection (49 CFR part, OOS flag). `inspection_violations`	weekly	13,549,053	Vehicle_Inspections_And_Violations_20261025.csv.gz	2026-10-25T20:23:34.466754+00:00
Inspections and Citations Citations issued with inspections. `inspection_citations`	weekly	28,423	Inspections_And_Citations_20261026.csv.gz	2026-10-26T21:22:07.571297+00:00
Violation Code Dictionary FMCSA descriptions, BASIC category and severity weight per 49 CFR violation code (distilled from SMS Input – Violation). `violation_codes`	monthly	1,945	SMS_Input_-_Violation_20261013.csv.gz	2026-10-13T08:15:32.516173+00:00

Crashes

Dataset	Cadence	Rows	Source file	Last updated
Crash File Federal/state crash reports, full history. One row per vehicle involved. `crash_records`	daily	5,018,645	Crash_File_20261028.csv.gz	2026-10-28T01:31:37.680437+00:00
SMS Input – Crash 24-month crash snapshot used in SMS calculations (severity weights). `crashes`	monthly	311,487	SMS_Input_-_Crash_20261013.csv.gz	2026-10-13T07:42:34.937788+00:00

Licensing & Insurance

Dataset	Cadence	Rows	Source file	Last updated
Carrier (authority status) Operating-authority status and insurance requirements per docket. `li_carriers`	daily	1,860,849	Carrier_20261028.csv.gz	2026-10-28T02:36:05.375265+00:00
ActPendInsur (active/pending insurance) Active and pending insurance policies with coverage amounts. `li_active_insurance`	daily	467,983	ActPendInsur_20261027.csv.gz	2026-10-27T13:59:05.792111+00:00
Insur (policy detail) Per-policy insurance detail, keyed by docket. `li_insurance`	daily	467,984	Insur_20261027.csv.gz	2026-10-27T13:59:33.793725+00:00
InsHist (insurance history) Cancelled / replaced insurance policy history. `li_insurance_history`	weekly	7,427,947	InsHist_20261026.csv.gz	2026-10-26T21:35:32.048158+00:00
AuthHist (authority history) Grant / revoke history for each operating authority. `li_auth_history`	weekly	4,941,431	AuthHist_20261026.csv.gz	2026-10-26T21:39:12.616937+00:00
Revocation Revoked authorities with order types and dates. `li_revocations`	daily	1,529,083	Revocation_20261027.csv.gz	2026-10-27T14:04:29.506359+00:00
BOC-3 (process agents) Blanket process agent designations. `li_boc3`	weekly	1,861,044	BOC3_20261026.csv.gz	2026-10-26T21:42:59.535914+00:00
Rejected (insurance filings) Insurance filings rejected by FMCSA, with reasons. `li_rejected`	daily	7,145	Rejected_20261027.csv.gz	2026-10-27T14:04:32.431939+00:00

Safety Measurement System (SMS)

Dataset	Cadence	Rows	Source file	Last updated
SMS AB Pass BASIC results — interstate / hazmat passenger carriers. `sms_basics`	monthly	8,625	SMS_AB_Pass_20261013.csv.gz	2026-10-13T07:37:56.589491+00:00
SMS AB PassProperty BASIC results — interstate / hazmat property & passenger carriers. `sms_basics`	monthly	676,951	SMS_AB_PassProperty_20261013.csv.gz	2026-10-13T07:38:55.363292+00:00
SMS C Pass BASIC results — intrastate non-hazmat passenger carriers. `sms_basics`	monthly	19,855	SMS_C_Pass_20261013.csv.gz	2026-10-13T07:39:29.512119+00:00
SMS C PassProperty BASIC results — intrastate non-hazmat property & passenger carriers. `sms_basics`	monthly	1,455,917	SMS_C_PassProperty_20261013.csv.gz	2026-10-13T07:40:28.480163+00:00

Derived (rebuilt after every import)

Dataset	Cadence	Rows	Source file	Last updated
Carrier safety roll-up Per-DOT summary of SMS alerts and crash counts (powers search chips). `carrier_safety`	after each import	2,166,613	—	2026-10-28T02:36:40.401991+00:00
SMS measure percentile bands Non-zero measure breakpoints by SMS inspection-count cohort (ISS + BASIC cards). `sms_measure_bands`	after each import	119	—	2026-10-28T02:36:40.401991+00:00
Crash Indicator measure bands Weighted-crash / power-unit percentiles by Combination vs Straight cohort. `crash_measure_bands`	after each import	10	—	2026-10-28T02:36:40.401991+00:00
ISS inspection-rate quantiles Peer ranks of inspection-per-unit rates for the insufficient-data ISS algorithm. `iss_insp_rate_quantiles`	after each import	1	—	2026-10-28T02:36:40.401991+00:00

Unofficial mirror for reference only — FMCSA publishes the authoritative data at ai.fmcsa.dot.gov and data.transportation.gov. Source data is U.S. Government work in the public domain.