Several sets of federal regulations significantly influence how a commercial truck accident claim is constructed and assessed. The Federal Motor Carrier Safety Administration (FMCSA) oversees the commercial trucking industry through a series of rules outlined in Title 49 of the Code of Federal Regulations.
The most frequently contested regulatory areas in truck accident claims include driver qualifications (49 CFR Part 391), hours of service (49 CFR Part 395), drug and alcohol testing (49 CFR Part 382), vehicle inspection and maintenance (49 CFR Part 396), cargo securement (49 CFR Part 393), and minimum insurance requirements (49 CFR Part 387). A violation of any of these regulations by a driver or a carrier is directly relevant to establishing liability.
At Goff Law Group, our Connecticut personal injury attorneys have represented truck accident victims throughout Connecticut, Massachusetts, and New York. Led by founding attorney Brooke Goff, who has earned recognition as a Super Lawyers Rising Star for eight consecutive years and has recovered millions in compensation for injured clients, our team is skilled at identifying FMCSA violations in carrier records and leveraging them to build the strongest possible case.
This article explains the requirements of these regulations, where to find the specific rules, and how violations can lead to liability.
What Is the FMCSA and What Authority Does It Have?
The Federal Motor Carrier Safety Administration is an agency within the U.S. Department of Transportation responsible for regulating commercial motor vehicles (CMVs) operating in interstate commerce. Congress created the FMCSA in 2000 under the Motor Carrier Safety Improvement Act, separating commercial vehicle oversight from the broader Federal Highway Administration.
The FMCSA's rules are published in the Federal Motor Carrier Safety Regulations (FMCSRs), found in Title 49 of the Code of Federal Regulations, Parts 300 through 399. These regulations apply to:
- Commercial motor vehicles with a gross vehicle weight rating (GVWR) of 10,001 pounds or more
- Vehicles designed or used to transport 9 or more passengers for compensation
- Vehicles transporting hazardous materials in quantities requiring placarding
Most tractor-trailers, box trucks, tankers, and flatbeds operating on Connecticut highways fall within this definition. When a carrier or driver violates the FMCSRs and that violation contributes to a crash, it becomes central evidence in a personal injury or wrongful death claim.
FMCSA Regulatory Areas That Apply to Truck Accident Claims
| Regulatory Area | CFR Citation | What It Governs | Why It Matters in Claims |
| Driver Qualifications | 49 CFR Part 391 | Licensing, medical certification, driving history | An unqualified driver creates direct carrier liability |
| Hours of Service | 49 CFR Part 395 | Maximum driving and on-duty hours | HOS violations are primary evidence of driver fatigue |
| Drug and Alcohol Testing | 49 CFR Part 382 | Pre-employment, random, and post-accident testing | Failed or missing tests establish impairment evidence |
| Vehicle Inspection and Maintenance | 49 CFR Part 396 | Inspection schedules, repair records, DVIRs | Mechanical failures tied to poor maintenance support negligence |
| Cargo Securement | 49 CFR Part 393 | Load limits, tie-down and blocking standards | Unsecured cargo causing a crash creates multi-party liability |
| Financial Responsibility | 49 CFR Part 387 | Minimum insurance coverage levels | Determines the insurance floor available for recovery |
Driver Qualification Requirements Under 49 CFR Part 391
49 CFR Part 391 sets the minimum standards a commercial driver must meet before operating a CMV. Carriers are legally required to investigate and document each driver's qualifications before putting them on the road.
Key requirements include:
- A valid Commercial Driver's License (CDL) appropriate for the vehicle class and any endorsements required by the cargo type
- A current medical examiner's certificate confirming the driver meets federal physical fitness standards, issued by an FMCSA-registered medical examiner
- A completed employment application with a ten-year work history
- Verification of prior employment and safety performance history from past employers
- A road test or equivalent certification
- A review of the driver's motor vehicle record from every state where the driver has held a license in the past three years
When a carrier hires a driver without completing these checks, or retains a driver whose medical certificate has expired or whose CDL has been suspended, that failure is evidence of negligent hiring and negligent entrustment.
Hours-of-Service Regulations Under 49 CFR Part 395
Fatigued driving is one of the most significant causes of large truck crashes. 49 CFR Part 395 establishes hard limits on how long a commercial driver may operate before resting.
Since 2017, most carriers subject to HOS rules have been required to use Electronic Logging Devices (ELDs) that automatically record driving time and on-duty status. ELD data is a critical piece of discovery in any truck accident case because it creates a tamper-resistant record of whether the driver complied at the time of the crash. HOS violations documented in ELD records, or the absence of required ELD records, are strong indicators of carrier negligence.
The current rules for property-carrying drivers are:
| HOS Rule | Limit | Condition |
| Maximum driving time | 11 hours | After 10 consecutive hours off duty |
| 14-hour driving window | 14 hours on duty | Driving must stop after 14 hours; window cannot be extended by breaks |
| 30-minute break | Required after 8 cumulative hours of driving | Driver must be off duty, in sleeper berth, or in on-duty not-driving status |
| 60/70-hour on-duty limit | 60 hours in 7 days or 70 hours in 8 days | Applies based on whether carrier operates every day of the week |
| 34-hour restart | Resets the 60/70-hour clock | Must include two periods of 1:00 a.m. to 5:00 a.m. home terminal time |
Drug and Alcohol Testing Requirements Under 49 CFR Part 382
49 CFR Part 382 requires carriers to conduct drug and alcohol testing of CMV drivers at several mandatory trigger points:
- Pre-employment: Before a driver operates a CMV for the first time.
- Random: Carriers must test a minimum percentage of their driver pool each year; the FMCSA sets the minimum annual rate for drug testing.
- Post-accident: Required when a crash results in a fatality, or when a driver receives a citation, and there is an injury or vehicle tow.
- Reasonable suspicion: When a trained supervisor observes behavior consistent with drug or alcohol use.
- Return-to-duty and follow-up: After a driver has violated a drug or alcohol rule, they must complete the required evaluation and treatment.
The post-accident testing requirement is particularly significant:
- Under 49 CFR Section 382.303, a driver involved in a fatal crash must be tested as soon as practicable
- A carrier's failure to conduct required post-accident testing is itself a regulatory violation
- That failure can be used to argue that the carrier was attempting to conceal a potential impairment issue
Vehicle Inspection and Maintenance Requirements Under 49 CFR Part 396
49 CFR Part 396 places ongoing maintenance and inspection obligations on both drivers and carriers.
Driver-level requirements include:
- A pre-trip inspection before each trip, with any defects noted in a Driver Vehicle Inspection Report (DVIR)
- A post-trip inspection at the end of each day of operation
- Reporting of any defect or deficiency that would affect safe operation or result in a mechanical breakdown
Carrier-level requirements include:
- A systematic maintenance program covering all CMVs in the fleet
- Annual or 12-month inspections of every vehicle, with records retained for at least 14 months
- Retention of all DVIR records for at least 3 months
- Immediate repair of any defect reported by a driver that affects safe operation before the vehicle is returned to service
In crash litigation, maintenance records and DVIRs are among the first documents requested in discovery. A pattern of deferred repairs, missing annual inspection records, or DVIRs showing repeated notation of the same defect without corrective action is powerful evidence that the carrier prioritized operations over safety.
Cargo Securement Standards Under 49 CFR Part 393
49 CFR Part 393 governs the equipment that must be on a CMV and how cargo must be secured. The cargo securement rules apply to all freight and specify minimum requirements for:
- The number and working load limit of tie-downs based on cargo weight and length
- Blocking and bracing requirements for specific cargo categories, including logs, metal coils, paper rolls, and automobiles
- Front-end protection to prevent cargo from penetrating the cab in a sudden stop
Cargo-related crashes can result in liability beyond just the driver and carrier; third-party logistics companies, shippers, or freight brokers may also be held responsible if improper securement contributed to the accident. Identifying all parties in the cargo chain is crucial for any truck accident investigation.
Minimum Financial Responsibility Requirements Under 49 CFR Part 387
49 CFR Part 387 requires carriers to maintain minimum levels of liability insurance and to file proof of that coverage with the FMCSA. Current federal minimums are:
| Cargo Type | Minimum Liability Coverage |
| General freight (non-hazmat) | $750,000 |
| Hazardous materials (non-bulk) | $1,000,000 |
| Hazardous materials (bulk, certain categories) | $5,000,000 |
| Passenger carriers (9-15 passengers) | $1,500,000 |
These minimums are a floor, not a limit. Many carriers maintain coverage well above the federal minimum, and umbrella or excess policies may provide additional layers of recovery. The MCS-90 endorsement, a standard form required by Part 387, ensures that an injured member of the public can recover from the carrier's insurer even when a coverage dispute exists between the carrier and its insurer over the specific policy terms.
How FMCSA Violations Establish Liability in a Connecticut Truck Accident Claim
An FMCSA violation does not automatically mean a carrier or driver is liable for a crash. What violations do is create powerful evidence supporting negligence claims under two recognized legal theories.
The first is negligence per se. Under this theory, when a party violates a statute or regulation designed to protect a class of people from a specific type of harm, that violation can substitute for the duty and breach elements of a negligence claim.
If a driver was over the HOS limit at the time of a crash, and federal HOS rules exist specifically to prevent fatigue-related crashes, a Connecticut court may treat that violation as negligence per se.
The second is general negligence. Even where negligence per se does not apply, a regulatory violation is strong evidence that the carrier or driver failed to meet the standard of care owed to other road users.
Examples of conduct that fall below the standard of a reasonably prudent carrier include:
- Skipping required annual vehicle inspections
- Retaining a driver whose CDL has lapsed or whose medical certificate has expired
- Failing to conduct post-accident drug testing after a qualifying crash
The FMCSA Safety Measurement System is publicly accessible for locating a carrier's safety record, inspection history, and crash history before filing a claim. Entering the carrier's name or USDOT number returns its safety performance data, including:
- Out-of-service orders
- Unresolved violations
- The carrier's overall safety rating
This record is often one of the first documents an attorney reviews when evaluating a commercial vehicle case.
Evidence preservation is equally important. Many of the records that document FMCSA compliance are only retained for limited periods, including:
- ELD data
- Driver Vehicle Inspection Reports (DVIRs)
- Maintenance logs
- Drug and alcohol testing records
- The carrier's driver qualification file
Sending a spoliation letter to the carrier immediately after a crash puts the carrier on notice that destroying or overwriting those records could result in court sanctions.
Were You Injured in a Truck Accident in Connecticut?
Federal regulations set the baseline for how commercial carriers and drivers must operate. When those rules are broken and someone is injured, the violation record becomes a roadmap for building a claim.
Goff Law Group has earned a 99% success rate across thousands of Connecticut personal injury cases and more than 491 five-star reviews from clients who needed someone to fight for them when the stakes were highest. With eight offices across Connecticut, Massachusetts, and New York, our team is ready to investigate the carrier's compliance history, identify every liable party, and pursue the full compensation you deserve.
Contact Goff Law Group for a free case evaluation. There is no fee unless we win.
Disclaimer: The information on this page is provided for general educational purposes only and does not constitute legal advice. Every case is different. Past results do not guarantee future outcomes.
