If you work in any sector of the trucking industry, you have likely heard of the Federal Motor Carrier Safety Administration (FMCSA) BASIC scores. BASIC, which stands for Behavior Analysis and Safety Improvement Categories, is part of the FMCSA’s safety monitoring program that evaluates the safety performance of motor carriers. These categories are a key component of the broader Compliance, Safety, Accountability (CSA) program.
Each BASIC category generates a percentile ranking from 0 to 100, with higher scores representing poorer performance. BASIC scores are calculated using data collected over a rolling 24-month period from three primary sources:
- Roadside inspections conducted by state and federal officials
- Crash reports submitted by law enforcement agencies through state reporting systems
- Investigation findings from compliance reviews and other FMCSA enforcement activities
It is important to note that not all carriers receive BASIC scores. A carrier must accumulate a minimum number of inspections with violations or a minimum number of crashes before the FMCSA has enough data to generate a percentile ranking. As a result, smaller carriers with limited inspection activity may not have scores in some or all BASIC categories.
BASIC Categories
Each BASIC category evaluates a specific aspect of a carrier’s safety performance through six categories:
1. Unsafe Driving – Intervention Threshold: 65%
The Unsafe Driving BASIC measures how safely a carrier’s drivers operate commercial vehicles on public roads. It considers behaviors such as speeding, reckless or careless driving, improper lane changes, following other vehicles too closely, using handheld mobile devices while driving, failing to wear a seat belt, disregarding traffic signals, and making improper passing or turning maneuvers. Serious speeding violations carry a higher severity weight and can have a greater impact on a carrier’s score.
2. Hours-of-Service (HOS) Compliance – Intervention Threshold: 65%
This category evaluates a carrier’s compliance with federal hours-of-service regulations. Common violations include driving beyond the maximum allowable hours, exceeding the 60/70-hour weekly limits, falsifying logbooks or Electronic Logging Device (ELD) records, and failing to take the required 30-minute rest breaks. Consistent compliance with HOS regulations is essential to reducing driver fatigue and improving roadway safety.
3. Driver Fitness – Intervention Threshold: 80%
The Driver Fitness BASIC focuses on whether drivers meet all qualification and licensing requirements established by federal regulations. Violations may involve operating without a valid Commercial Driver’s License (CDL), lacking the necessary endorsements for specific cargo, maintaining expired or missing medical certificates, keeping incomplete driver qualification files, driving with a suspended or revoked license, or failing to meet physical qualification standards.

4. Controlled Substances/Alcohol – Intervention Threshold: 80%
This category measures compliance with federal regulations governing controlled substances and alcohol use. Violations include operating a commercial vehicle under the influence of drugs or alcohol, receiving positive drug or alcohol test results, possessing alcohol or illegal substances in a commercial vehicle, failing to maintain a compliant drug and alcohol testing program, or employing drivers who have not completed the required return-to-duty process after a positive test.
5. Vehicle Maintenance – Intervention Threshold: 80%
The Vehicle Maintenance BASIC evaluates the mechanical condition of a carrier’s fleet and is one of the most common sources of violations. Issues that affect this score include brake and tire defects, malfunctioning lights or reflectors, cargo securement problems, exhaust system leaks, chassis and suspension defects, coupling device failures, and the failure to properly perform or document pre-trip and post-trip inspections. A strong preventive maintenance program can significantly reduce violations in this category.
6. Crash Indicator – Intervention Threshold: 65%
This category measures a carrier’s crash history, weighted according to crash severity. Crashes are classified into three levels:
- Fatal crashes – highest severity weight
- Injury crashes – moderate severity weight
- Tow-away crashes – lowest severity weight

How Do I Know if My BASIC Score Is Good?
BASIC percentile rankings can generally be interpreted as follows:
- 0% to 30%: Excellent. The carrier ranks among the best-performing companies within its peer group.
- 31% to 50%: Good. The carrier performs above average compared to its peers.
- 51% to 64%: Caution Zone. The carrier performs below the average of comparable carriers.
- 65% to 79%: Intervention Level. Attention is needed in areas such as unsafe driving, hours-of-service compliance, and crash performance.
- 80% to 100%: High Risk. The carrier meets or exceeds FMCSA intervention thresholds in all applicable BASIC categories.
When a carrier exceeds the intervention threshold in one or more BASIC categories, the FMCSA may take corrective action based on the severity of the score, the number of affected categories, and the carrier’s compliance history.
BASIC scores can be viewed using an active USDOT number through the FMCSA’s Safety Measurement System (SMS). Owner-operators with their own operating authority accumulate scores under their own USDOT number. However, when owner-operators are leased to another carrier, inspections and violations are generally attributed to the leasing carrier.
How Can You Improve Your BASIC Score?
Carriers with BASIC scores above intervention thresholds—or those seeking to maintain strong scores—can take several proactive measures:
- Correct violations identified during inspections as quickly as possible to demonstrate a commitment to safety and compliance.
- Review and challenge inaccurate records through the DataQs system when inspection, crash, or violation errors exist.
- Implement ongoing driver training programs focused on the violations that most negatively affect BASIC scores.
- Strengthen preventive maintenance programs to reduce violations related to brakes, tires, lights, and other critical vehicle components.
- Monitor BASIC scores monthly to identify trends and implement corrective actions promptly.
- Use benchmarking and analytics tools to compare performance against other carriers.
- Encourage violation-free inspections, which help improve percentile rankings by increasing the total number of inspections without adding new violations.
BASIC is an important safety monitoring system established by the FMCSA. If you have additional questions about BASIC scores or FMCSA compliance requirements, please do not hesitate to contact us.