393.48(b) — Brakes out of adjustment
FMCSA violation code under Vehicle Maintenance. Severity weight: 7. Out-of-service eligible.
Violation Description
Service brakes on commercial motor vehicle are out of adjustment beyond allowable limits.
About This Violation Code
Code 393.48(b) falls under the Vehicle Maintenance BASIC category in FMCSA's Safety Measurement System (SMS). It carries a severity weight of 7 (scale 1-10, higher = more severe). This violation is Out-of-Service eligible, meaning the driver or vehicle may be placed out of service at roadside when cited.
When this violation is cited during a roadside inspection, it contributes to the carrier's Vehicle Maintenance BASIC score. Carriers with high BASIC percentiles may be prioritized for FMCSA interventions including warning letters, investigations, or compliance reviews.
Regulatory Reference
Federal Motor Carrier Safety Regulations
This violation references 49 CFR 393.48 in the Federal Motor Carrier Safety Regulations.