Straight answer
What is a CSA score?
CSA is FMCSA's Compliance, Safety, Accountability programme, and its Safety Measurement System scores carriers using roadside inspection and crash data across several categories called BASICs. Carriers are ranked against peers with a similar level of inspection activity, so the score is relative — you're being compared to carriers like you, not to an absolute standard.
The BASICs cover areas including unsafe driving, hours-of-service compliance, driver fitness, controlled substances and alcohol, vehicle maintenance, hazardous materials compliance and crash indicator. Check the current categories and methodology directly on FMCSA's website, because the programme has been revised over time.
Why it costs you money
- Insurance. Underwriters look at it. A poor score in maintenance or unsafe driving affects your premium at renewal, which for a small carrier is a large number.
- Broker access. Some brokers screen carriers on CSA and won't set up or won't tender loads to carriers above certain thresholds.
- Inspection frequency. Higher scores attract more roadside inspections, and more inspections mean more opportunities to accumulate violations. It compounds.
- Shipper requirements. Some larger shippers set their own carrier standards above what brokers require.
How violations age
Violations are weighted by severity and by how recently they occurred, with older events counting less over time. That means a bad patch does fade — but only if you stop adding to it. It also means a small carrier with few inspections feels each violation much more heavily than a large fleet does, because there's less data to dilute it. One bad inspection can move a one-truck operation's score significantly.
The practical version
Most violations that damage small carriers are avoidable and boring: lights out, tyres, brake adjustment, load securement, and logbook errors. A genuine pre-trip inspection done properly prevents most of them. Check your own data in FMCSA's portal, and if you see something that isn't yours, there is a formal process for challenging it — but you have to actually look to find it.
Answers
Frequently asked questions
What is a good CSA score?
Scores are percentile rankings against carriers with similar inspection volume, so lower is better and the meaningful question is whether you're below the intervention thresholds FMCSA publishes for each BASIC. Check current thresholds on FMCSA's site — they differ by category and by carrier type.
How long do violations stay on my CSA score?
Violations are weighted by severity and by recency, with older events counting progressively less over time rather than disappearing at once. A bad period does fade if you stop adding to it. Small carriers feel each violation more heavily because there is less inspection data to dilute it.
Can a bad CSA score stop me getting loads?
Yes. Some brokers screen carriers on CSA data and will not set up or tender loads to carriers above certain thresholds, and some shippers apply their own standards. It also affects insurance pricing at renewal and increases how often you're pulled in for roadside inspection.
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