FMCSA, BASIC, and carrier terms
Plain-English definitions of the federal and industry terms that appear on a ProHRHQ carrier page. Each term shows a short definition; open it for more, or follow the link to the full explanation, including where the term appears on a carrier page.
Federal data sources and process
FMCSA Company Census (MCS-150) The federal filing every motor carrier must submit to register with the Federal Motor Carrier Safety Administration and refresh biennially thereafter.
The form captures the carrier's legal identity, principal address, contact information, fleet composition (power units, drivers, trailers), and the cargo classifications and operating authority the carrier claims.
FMCSA SMS Safety Measurement System. The federal scoring system the Federal Motor Carrier Safety Administration uses to rank motor carriers against their peers on roadside safety performance.
BASIC measures Behavior Analysis and Safety Improvement Categories. The seven categories FMCSA uses to organize motor carrier safety data: Unsafe Driving, Hours-of-Service Compliance, Driver Fitness, Controlled Substances/Alcohol, Vehicle Maintenance, Hazardous Materials Compliance, and Crash Indicator.
FMCSA safety rating The formal safety rating FMCSA issues to a motor carrier after a compliance review.
Three possible values: Satisfactory, Conditional, or Unsatisfactory. A fourth state — Not Rated — is the default for carriers that have not yet received a compliance review, which is the majority of registered carriers.
DataQs correction process The federal process for disputing the accuracy of motor carrier inspection, violation, crash, and registration records.
A carrier (or driver, or other party with standing) files a Request for Data Review through the DataQs portal at dataqs.fmcsa.dot.gov. The relevant state agency or FMCSA office reviews the request and either upholds the record, modifies it, or removes it.
BASIC categories
Unsafe Driving The FMCSA BASIC category covering driver behavior at the wheel.
Speeding, reckless driving, improper lane change, following too close, failure to yield, traffic signal violations, texting and mobile phone use while driving, and the driver-side conduct that contributes most directly to crashes.
Hours-of-Service Compliance The federal regulation governing how long commercial drivers can work and drive before rest.
The current rules set a 14-hour on-duty window, an 11-hour driving limit within that window, a 30-minute break requirement after 8 cumulative driving hours, and 60/70-hour weekly limits with restart provisions. Logged via Electronic Logging Devices (ELDs) on most for-hire operations.
Driver Fitness The FMCSA BASIC category covering whether the driver is qualified and fit to be operating the commercial vehicle.
CDL validity, endorsements present for the cargo and equipment being moved, medical certification current, driver qualification file (DQF) complete and accurate, driving record on file, and the supporting documentation a carrier must maintain on every CDL driver.
Controlled Substances/Alcohol The FMCSA BASIC category covering driver use of controlled substances and alcohol, along with the carrier's management of the federal drug and alcohol testing program.
Pre-employment, random, reasonable-suspicion, post-accident, return-to-duty, and follow-up testing requirements all fall under this BASIC. The Drug & Alcohol Clearinghouse — the federal database of testing violations — is part of the same regulatory frame.
Vehicle Maintenance The FMCSA BASIC category covering the equipment side of roadside inspections.
Brakes, tires, lights, mirrors, windshield, load securement, fuel and exhaust systems, suspension, frame, and the rest of the truck and trailer beyond the driver. Violations are weighted by severity and out-of-service status; an out-of-service Vehicle Maintenance violation takes the unit off the road on the spot.
Hazardous Materials Compliance The FMCSA BASIC category covering motor carriers authorized to transport hazardous materials under federal regulation.
Covers placarding, shipping papers, package integrity, loading and segregation, driver hazmat endorsement validity, and the broader hazmat regulatory regime under 49 CFR Parts 171–180.
Crash Indicator The FMCSA BASIC category measuring a carrier's crash history.
Counts reportable crashes — those resulting in fatality, injury, or vehicle damage requiring tow — over a two-year window, weighted by recency and severity. Crashes are counted regardless of fault determination at the scene; FMCSA's position is that involvement is a measurable safety signal even when the carrier driver was not the at-fault party.
Operational classifications
Auto-hauler classification Motor carriers specializing in the transport of finished vehicles — passenger cars, light trucks, work vehicles, motorcycles, RVs, and increasingly EVs.
Operations move vehicles between manufacturing plants, ports of entry, auction lots, rail terminals, and franchised dealerships, often on multi-vehicle trailers carrying eight to twelve units per load.
Drop-and-hook operations An operational pattern in which the tractor and driver drop a loaded trailer at the destination (or the trailer staging yard) and immediately hook a different trailer — empty or pre-loaded — for the next leg.
Distinct from live-load operations in which the driver waits at the dock for loading or unloading. Drop-and-hook is typically the pattern in dedicated lanes, large-customer accounts with pre-staged freight, and operations where trailer dwell time is acceptable.
MC authority Motor Carrier authority — the FMCSA grant of operating rights to transport property or passengers for-hire across state lines.
The MC number identifies the authority. Different authority types exist for different operations: MC (motor carrier of property), FF (freight forwarder), MX (Mexican-domiciled carrier authorized to operate in the US). Intrastate-only carriers operate without MC authority under state-issued operating rights.
Peer-cohort grading method (ProHRHQ) ProHRHQ's grading method. Each carrier is compared against a peer cohort of similarly sized fleets — typically the carriers within a narrow power-unit band around the subject's fleet size — and graded A through F on the resulting comparison.
Distinct from the federal FMCSA SMS percentile, which compares each carrier against the full national population.
Workforce classification
1099 vs W-2 driver classification Two ways a motor carrier can engage drivers. 1099 independent contractor — the driver is treated as a self-employed business; the carrier pays a per-mile or per-load rate, issues a 1099-NEC, and does not withhold payroll taxes, provide benefits, or carry workers' compensation on the driver.
W-2 employee — the driver is on the carrier's payroll; the carrier withholds payroll taxes, can offer benefits and retirement, and carries workers' compensation. The federal test for which classification applies is not what the carrier and driver call it; it is what the actual operating facts show.
PEO (Professional Employer Organization) A PEO is a company that may take on defined employment-administration responsibilities under a written service agreement.
Depending on the provider and arrangement, those services may include payroll processing and tax reporting, benefits administration, workers' compensation coverage and claims administration, HR systems, forms, policies, and support. The exact allocation of responsibilities belongs in the agreement; it should not be assumed from the term PEO alone.
Full explanation of PEO (Professional Employer Organization) →
The reference hub is in active build. Additional explainers — TWIC, Hazmat endorsements, ELD compliance, SAP-clear status, and others — are coming as the hub expands.