What the score is made of
CSA organizes roadside inspection and crash data into seven Behavior Analysis and Safety Improvement Categories, the BASICs: Unsafe Driving, Crash Indicator, Hours-of-Service Compliance, Vehicle Maintenance, Controlled Substances and Alcohol, Hazardous Materials Compliance, and Driver Fitness.
Violations are weighted by severity and by age. Recent violations count more than old ones, which cuts both ways: a bad quarter fades, and a good quarter does not protect you forever. Your percentile is relative to carriers of similar size and exposure, so growing your fleet changes your peer group.
Why it matters beyond FMCSA
Scores above intervention thresholds attract roadside attention and investigations. That is the regulatory consequence, and it is the smaller one.
The commercial consequence is that insurers, shippers and brokers read these numbers. Several of the BASICs are publicly visible, and a broker qualification packet increasingly includes a look at them. A carrier can lose freight over a Vehicle Maintenance percentile without ever being inspected again.
How to actually move them
There is no trick. You lower a score by removing the causes and then waiting for time weighting to do its work.
Practically: fix the pre-trip inspection habit, because Vehicle Maintenance violations are overwhelmingly things a driver should have caught in a walkaround. Train against the specific violations you are actually getting rather than generic safety content. Qualify new hires properly so you stop importing other carriers' problems. And challenge the records that are wrong.
DataQ challenges
Not every violation on your record belongs there. Wrong carrier on the inspection, a citation later dismissed, a violation recorded against the wrong driver, equipment that was not yours. The DataQs system exists to dispute these, and carriers under-use it badly.
A successful challenge removes the violation and its weight from your score. It requires documentation and a clearly written argument, submitted promptly, which is most of why it does not get done.
The seven BASICs
| BASIC | What it measures |
|---|---|
| Unsafe Driving | Speeding, reckless driving, improper lane change, inattention |
| Crash Indicator | History and severity of reportable crashes |
| Hours-of-Service Compliance | Driving beyond limits, log falsification, form and manner |
| Vehicle Maintenance | Brakes, lights, defects, cargo securement, inspection failures |
| Controlled Substances and Alcohol | Use or possession violations found roadside |
| Hazardous Materials Compliance | Placarding, packaging and paperwork for HM loads |
| Driver Fitness | Invalid license, medical certification, qualification failures |
Questions
How long do violations stay on my CSA score?+
Roadside violations generally influence the score for 24 months, weighted so recent events count more heavily than older ones.
Can CSA scores be removed or corrected?+
Inaccurate records can be challenged through the DataQs system. A successful challenge removes the violation and its weight. Accurate violations cannot be removed and age out over time.
Are CSA scores public?+
Several BASIC categories are publicly visible, which is why insurers, brokers and shippers routinely look at them. Some are restricted to the carrier and enforcement.
What score triggers an investigation?+
FMCSA sets intervention thresholds by BASIC and by carrier type. Exceeding a threshold makes you a candidate for intervention ranging from a warning letter to an onsite investigation.
This page summarizes federal regulations for general information. It is not legal advice, and the regulations change. Verify current requirements against the Federal Motor Carrier Safety Regulations or ask us.