FMCSA (Federal Motor Carrier Safety Administration)
The federal agency within the U.S. Department of Transportation that regulates the trucking and bus industries. FMCSA issues operating authority, sets safety standards, and maintains the databases — SAFER, SMS, MCMIS, L&I — that CarrierOk re-indexes the moment they publish updates, to power its carrier intelligence platform.
Learn moreWhat is FMCSA?
The Federal Motor Carrier Safety Administration (FMCSA) is the U.S. government agency responsible for regulating and providing safety oversight of commercial motor vehicles (CMVs). Established in 2000 as a separate administration within the Department of Transportation, FMCSA's mission is to reduce crashes, injuries, and fatalities involving large trucks and buses. The agency's responsibilities include: issuing and managing operating authority for interstate carriers, brokers, and freight forwarders; setting and enforcing safety regulations (hours of service, vehicle maintenance standards, drug and alcohol testing); maintaining critical databases including SAFER (public carrier lookup), SMS (Safety Measurement System scores), MCMIS (Motor Carrier Management Information System), and L&I (Licensing and Insurance filings); conducting compliance reviews and safety audits; and managing the CSA enforcement program. FMCSA regulates approximately 500,000 active motor carriers and 4+ million registered commercial vehicles. CarrierOk's data pipeline ingests from FMCSA source systems the moment they publish updates, enriches the raw data with computed fields (all 7 BASIC percentiles, risk scores, chameleon detection), and serves it through a unified API that eliminates the need to query multiple FMCSA systems independently.
Why does fmcsa matter?
Insurance Underwriters
FMCSA data is the authoritative source for carrier safety, insurance filings, and authority status — every underwriting decision should start with FMCSA-sourced data, whether accessed directly or through CarrierOk.
Freight Brokers
FMCSA sets the compliance framework you're legally required to verify — authority status, insurance minimums, and safety fitness are all FMCSA-defined standards that brokers must confirm before tendering loads.
Developers & Platforms
CarrierOk consolidates data from multiple FMCSA systems (SAFER, SMS, MCMIS, L&I) into a single API call, saving you from maintaining integrations with each system and handling their individual update schedules and data formats.
FMCSA in the CarrierOk API
This data is available via the /v2/profile endpoint. The following fields are returned in the carrier profile:
/v2/profiledot_numberlegal_nameauthority_commonsafety_rating_descinsurance_bipd_on_fileiss_valueFrequently asked questions
What does FMCSA do?
FMCSA regulates the commercial trucking and bus industries in the United States. It issues operating authority, sets safety standards like hours-of-service rules, maintains carrier safety databases, conducts compliance reviews, and manages the CSA enforcement program. The agency oversees approximately 500,000 active motor carriers and 4+ million registered commercial vehicles.
What FMCSA databases are available to the public?
FMCSA provides several public databases: SAFER (Safety and Fitness Electronic Records) for basic carrier lookups, SMS (Safety Measurement System) for BASIC percentile scores (5 of 7 publicly available), and the L&I query system for insurance filing verification. However, these systems are fragmented, updated on different schedules, and don't include all computed fields. CarrierOk unifies all sources into a single API.
How often does FMCSA update its data?
It varies by system. SMS data (BASIC percentiles) updates monthly. Insurance filings (L&I) update as insurers file or cancel policies — which can happen any business day. SAFER data updates irregularly. Authority changes can post within days of FMCSA processing. CarrierOk ingests each FMCSA source the moment it publishes an update, minimizing latency between FMCSA updates and API availability.
Related terms
CSA (Compliance, Safety, Accountability)
FMCSA's enforcement and compliance program that uses the Safety Measurement System to identify and prioritize high-risk motor carriers for intervention. CSA drives BASIC percentile scores, warning letters, and compliance reviews. CarrierOk provides all 7 BASIC percentiles, alert flags, and historical trend data via API.
DOT Number (USDOT Number)
A unique identifier assigned by the U.S. Department of Transportation to every motor carrier, broker, and freight forwarder in interstate commerce. The DOT number is the primary key for looking up safety records, insurance, and authority in FMCSA databases. CarrierOk indexes every DOT number on the federal register.
SAFER (Safety and Fitness Electronic Records)
FMCSA's public-facing website for looking up motor carrier safety information, including operating status, authority, and limited inspection data. SAFER does not compute BASIC percentiles, does not serve ISS scores, and updates less frequently. CarrierOk replaces manual SAFER lookups with a comprehensive, API-accessible carrier intelligence platform.
SMS (Safety Measurement System)
FMCSA's quantitative system for measuring motor carrier safety performance using inspection, crash, and investigation data. SMS produces the BASIC percentile scores that underpin the CSA enforcement program. CarrierOk computes all 7 BASIC percentiles from SMS source data and updates more frequently than FMCSA's monthly cycle.
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