Carrier compliance requirements are the federal rules every commercial trucking operation must meet to run legally in interstate commerce: register with FMCSA, carry the right insurance, qualify your drivers, respect hours-of-service limits, maintain your vehicles, run a drug and alcohol testing program, and pay the applicable taxes and fees. Miss any one of them and you can be fined, placed out of service, or lose your operating authority entirely. What follows walks through each obligation, the deadlines that attach to it, and the records you need to keep.
Register and Keep Your Authority Active
Every carrier operating in interstate commerce needs a USDOT Number, which is how FMCSA tracks your safety record and inspection history. If you haul regulated freight or passengers for hire across state lines, you also need a Motor Carrier (MC) Number as your formal operating authority. Running without authority exposes property carriers to civil penalties with minimums of $10,000 per violation, and those figures have been adjusted upward for inflation.1Federal Register. Civil Penalties Inflation Adjustments
Registration is not a one-time step. You must update your information every 24 months by filing the MCS-150 form. Miss the update and FMCSA will deactivate your USDOT Number, which means no legal transportation until you fix it.2eCFR. 49 CFR 390.19 – Motor Carrier Identification Reports
You also need a BOC-3 filing. Under 49 CFR 366, you must designate a process agent in every state where you operate or travel, meaning someone authorized to accept legal papers on your behalf. Each agent has to physically reside in the state they cover, and a P.O. box is not acceptable.3Federal Motor Carrier Safety Administration. Form BOC-3 – Designation of Agents for Service of Process Only one BOC-3 can be on file at a time, so any expansion into new states means filing a new one that covers everything.
Carry the Required Insurance
Minimum insurance levels are set by 49 CFR Part 387. For-hire carriers hauling non-hazardous property in vehicles with a gross vehicle weight rating above 10,001 pounds must carry at least $750,000 in public liability coverage. Haul hazardous materials in bulk and the minimum jumps to $5,000,000.4eCFR. 49 CFR 387.9 – Financial Responsibility, Minimum Levels
Your insurer files a Form MCS-90 endorsement with FMCSA, attached to your liability policy, covering all vehicles operating under it that are subject to federal financial responsibility rules.5Federal Motor Carrier Safety Administration. Form MCS-90 – Endorsement for Motor Carrier Policies of Insurance for Public Liability The MCS-90 guarantees the insurer will pay public liability claims even if the underlying policy would otherwise exclude them. Let coverage lapse and your operating authority can be suspended immediately.
Build and Maintain Driver Qualification Files
Under 49 CFR Part 391, every driver must have a Driver Qualification (DQ) file containing a completed employment application, a motor vehicle record from the driver’s licensing state at the time of hire, proof they passed a road test or an equivalent certification, and a current medical examiner’s certificate. For CDL holders, the motor vehicle record must also reflect medical certification status.6eCFR. 49 CFR 391.51 – General Requirements for Driver Qualification Files
The file is a living record. Pull a fresh motor vehicle record at least once a year, review the driver’s record, and document the review. If the medical certificate expires, the driver cannot legally operate until a new one is on file. You also need to keep records of safety performance inquiries with each driver’s previous employers.6eCFR. 49 CFR 391.51 – General Requirements for Driver Qualification Files DQ files are among the first things an auditor asks for, and missing files are one of the most common reasons new carriers fail their first safety audit.
Follow Hours-of-Service Limits and Log Them
Hours-of-service (HOS) rules under 49 CFR Part 395 cap how long a property-carrying driver can be behind the wheel:
- You cannot drive more than 11 hours after 10 consecutive hours off duty.7eCFR. 49 CFR 395.3 – Maximum Driving Time for Property-Carrying Vehicles
- All driving must happen within 14 consecutive hours of coming on duty. Once that window closes, no more driving until another 10-hour off-duty break, even if you had driving hours left.
- After 8 cumulative hours of driving without at least a 30-minute interruption, you must stop. The break can be off-duty time, sleeper berth time, or on-duty not-driving time.
- Before any new driving period, you need 10 consecutive hours off duty.
On top of the daily limits, there is a weekly cap. Carriers operating every day of the week are limited to 70 hours on duty in any 8 consecutive days. Carriers that do not operate every day are limited to 60 hours in 7 consecutive days.8eCFR. 49 CFR 395.3 – Maximum Driving Time for Property-Carrying Vehicles A 34-consecutive-hour restart resets the weekly clock.
Electronic Logging Devices
Most carriers must equip vehicles with an Electronic Logging Device (ELD) that connects to the engine and automatically records driving time. The ELD mandate took effect in December 2017, and any device in use must appear on FMCSA’s registered device list.9eCFR. 49 CFR Part 395 Subpart B – Electronic Logging Devices Short-haul drivers operating within a 100 air-mile radius who return to their reporting location each day are generally exempt.
Keep records of duty status and supporting documents for at least six months from the date you receive them.10eCFR. 49 CFR 395.8 – Driver’s Record of Duty Status Knowingly falsifying a log is treated as a serious violation, with substantial civil penalties available against both driver and carrier.
Inspect and Maintain Every Vehicle
Every carrier must have a systematic program for inspecting, repairing, and maintaining all commercial vehicles under its control, whether owned or leased.11eCFR. 49 CFR Part 396 – Inspection, Repair, and Maintenance
At the end of each day, drivers must report any defects or deficiencies that could affect safe operation. If no defects are found, no written report is required.12eCFR. 49 CFR 396.11 – Driver Vehicle Inspection Reports When a defect is reported, the carrier must repair it before the vehicle goes back on the road. Every commercial vehicle also needs a thorough periodic inspection at least once every 12 months, covering the safety-critical components in Appendix A to Part 396. Records from these annual inspections must be kept for at least 14 months.11eCFR. 49 CFR Part 396 – Inspection, Repair, and Maintenance
An authorized inspector who finds a vehicle in a condition likely to cause an accident or breakdown can place it out of service on the spot. An out-of-service vehicle cannot be moved except to the nearest safe repair location.
Run a Drug and Alcohol Testing Program
Under 49 CFR Part 382, every carrier must run a testing program covering all drivers who perform safety-sensitive functions. Required testing categories:13eCFR. 49 CFR Part 382 – Controlled Substances and Alcohol Use and Testing
- Pre-employment controlled substances testing before any safety-sensitive work.
- Random testing, unannounced, throughout the year, covering the entire pool.
- Post-accident testing after qualifying accidents (a fatality, or a moving violation combined with off-scene medical treatment or a tow).
- Reasonable-suspicion testing when a trained supervisor observes specific signs of impairment. The supervisor making the observation cannot administer the alcohol test.
The Drug and Alcohol Clearinghouse
All positive results and refusals must be reported to FMCSA’s Drug and Alcohol Clearinghouse by the close of the third business day after the employer learns of the violation.14FMCSA Drug and Alcohol Clearinghouse. The Return-to-Duty Process and the Clearinghouse You must also query the Clearinghouse at least once every 12 months for every driver you employ to check whether another employer has reported a violation.15FMCSA Drug and Alcohol Clearinghouse. Drug and Alcohol Clearinghouse FAQ
A driver who tests positive or refuses a test is prohibited from safety-sensitive work until completing the full return-to-duty (RTD) process: evaluation by a DOT-qualified Substance Abuse Professional (SAP), whatever education or treatment the SAP prescribes, a follow-up evaluation confirming compliance, and a negative return-to-duty test. The SAP then sets a follow-up testing plan any subsequent employer must honor. RTD records stay in the Clearinghouse for five years from the violation date or until the follow-up plan is finished, whichever comes later.14FMCSA Drug and Alcohol Clearinghouse. The Return-to-Duty Process and the Clearinghouse
File the Taxes and Fees That Keep You on the Road
Missing a tax or registration deadline can pull a truck off the road at a weigh station as fast as a mechanical defect.
International Fuel Tax Agreement
The International Fuel Tax Agreement (IFTA) lets carriers operating across state and provincial lines file one quarterly return with their base jurisdiction instead of filing separately with every jurisdiction driven through. Returns are due by the last day of the month after each quarter: April 30, July 31, October 31, and January 31. Fall behind and your IFTA license can be revoked, in which case you may need to buy individual trip permits at every border crossing.
Unified Carrier Registration
The Unified Carrier Registration (UCR) program under 49 U.S.C. ยง 14504a requires interstate motor carriers, brokers, freight forwarders, and leasing companies to register and pay an annual fee based on fleet size.16Office of the Law Revision Counsel. 49 USC 14504a – Unified Carrier Registration System Plan and Agreement For 2026, the smallest carriers with two or fewer power units pay $46, and the largest fleets with over 1,000 vehicles pay $44,836. Brokers and freight forwarders with no vehicles pay the lowest tier. Operating without a current UCR registration can bring fines and an out-of-service order at roadside.
Heavy Vehicle Use Tax
Any highway motor vehicle with a taxable gross weight of 55,000 pounds or more is subject to the federal Heavy Vehicle Use Tax, reported on IRS Form 2290.17Internal Revenue Service. About Form 2290, Heavy Highway Vehicle Use Tax Return The form is due by the last day of the month following the month a vehicle is first used on public highways. For most carriers, whose tax period begins in July, that means an August 31 deadline.18Internal Revenue Service. Instructions for Form 2290 You need proof of payment, the stamped Schedule 1, to register the vehicle in any state.
The New Entrant Audit and Ongoing CSA Monitoring
New carriers enter an 18-month monitoring period during which FMCSA watches your roadside safety performance closely.19eCFR. 49 CFR Part 385 Subpart D – New Entrant Safety Assurance Program Within that window, generally after you have been operating at least three months, FMCSA conducts a safety audit covering driver files, drug testing, vehicle maintenance, and hours-of-service compliance.
Pass and monitoring continues through the rest of the 18-month period. Fail and you get a written notice with a deadline to correct the problems, usually 60 days, or 45 days for passenger and hazmat carriers. Miss the correction deadline and your USDOT registration is revoked and operations are placed out of service.20Federal Motor Carrier Safety Administration. New Entrant Safety Assurance Program
Even after you clear the new entrant period, FMCSA never stops watching. The Compliance, Safety, Accountability (CSA) program feeds roadside inspection results, crash reports, and compliance review findings into the Safety Measurement System (SMS), scoring you across seven categories called BASICs, including Unsafe Driving, Hours-of-Service Compliance, Driver Fitness, Controlled Substances and Alcohol, Vehicle Maintenance, Hazardous Materials Compliance, and Crash Indicator.21FMCSA CSA. CSA Compliance, Safety, Accountability Cross the threshold in any BASIC and FMCSA may prioritize you for an intervention ranging from a warning letter to a full compliance review at your terminal. A poor result in that review can produce an Unsatisfactory safety rating, which triggers an order to cease operations. Every inspection feeds the data, so patterns build over time.