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Glossary · updated October 24, 2026

Unsafe Driving BASIC

By Korey Sharp-Paar · Reviewed by the Fast Trucking Compliance team

Definition

Unsafe Driving is one of the seven CSA Behavior Analysis and Safety Improvement Categories under 49 CFR §385. Violations include speeding, reckless driving, improper lane change, inattention, and seatbelt non-use. Severity weights for Unsafe Driving violations range from 1 (minor) to 10 (major); the weight scales with relevance to crash risk. Carriers with elevated Unsafe Driving percentiles should run targeted driver-by-driver review and consider speed limiters as a remediation step.

Authoritative source

FMCSA CSA program

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CSA Scores & OOS Rate

How FMCSA computes BASIC scores and what the out-of-service rate signals to brokers.

Related terms

  • CSA(Compliance, Safety, Accountability)
  • BASIC Scores(Behavior Analysis and Safety Improvement Categories)

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