Compliance, Safety, Accountability, commonly shortened to CSA, is the FMCSA's data-driven system for measuring and ranking motor carrier safety performance. Understanding how it works matters well beyond simple compliance, since CSA scores directly influence insurance premiums, broker willingness to work with a carrier, and the likelihood of being selected for a roadside inspection or audit.
In This Guide
1. What CSA Actually Is
CSA is the FMCSA's program for identifying carriers and drivers with safety problems through ongoing data collection, roadside inspections, crash reports, and violation records, rather than relying solely on periodic compliance reviews. The resulting scores help the FMCSA prioritize which carriers get selected for closer scrutiny.
2. The Seven BASIC Categories
Carriers are scored across seven Behavior Analysis Safety Improvement Categories, known as BASICs: Unsafe Driving, Hours-of-Service Compliance, Driver Fitness, Controlled Substances/Alcohol, Vehicle Maintenance, Hazardous Materials Compliance, and Crash Indicator. Each category is scored independently, so a carrier can perform well in some areas and poorly in others.
3. Where the Data Comes From
CSA scores are built from roadside inspection results and crash reports over a rolling 24-month window, meaning a single bad inspection or violation stays in the score calculation for up to two years before aging out. This is part of why consistent, ongoing compliance matters more than occasional spot-checks before a known inspection.
CSA scores are percentile rankings compared against similar carriers, not a fixed point scale. A score can shift even without any new violations simply because other carriers' data changes the comparison group.
4. Who Can See Your Score
Much of a carrier's CSA data is publicly available through the FMCSA's SAFER system, and many brokers and shippers check it before agreeing to work with an unfamiliar carrier. This is one of the more direct, practical reasons a poor safety record can shrink the pool of brokers willing to book loads with a carrier, separate from any insurance impact.
5. Consequences of a Poor Score
Beyond affecting broker willingness to work with a carrier, a poor CSA score in any BASIC category directly affects insurance premiums, since insurers price risk partly based on this public safety data. Carriers with scores above certain thresholds in a given BASIC category also face a higher likelihood of being selected for roadside inspections and compliance reviews going forward.
6. Improving Your Score
Since the scoring window is 24 months, improvement is gradual rather than immediate, consistent compliance over time causes older violations to age out while newer clean inspections build a better track record. Addressing the root cause behind repeated violations in a specific BASIC category, whether that's a maintenance process gap or a driver training issue, matters more than trying to simply avoid the next inspection.
Frequently Asked Questions
What does a good CSA score mean?
A lower CSA percentile score is better, indicating fewer safety violations relative to similar carriers across the seven BASIC categories. Scores are built from a rolling 24-month window of inspection and crash data.
Can brokers see a carrier's CSA score?
Yes, much of a carrier's CSA safety data is publicly available through the FMCSA's SAFER system, and many brokers and shippers check it before deciding whether to work with an unfamiliar carrier.
How long does a violation affect a CSA score?
Violations and inspection data remain part of the CSA calculation for a rolling 24-month period before aging out, which means consistent compliance over time matters more than a single clean inspection right before an audit.
This guide is for informational purposes. Regulations, fees, and requirements change — always verify current information directly with the FMCSA, your state DOT, and qualified professional advisors before making business decisions.