393.48(b) — Brakes out of adjustment

FMCSA violation code under Vehicle Maintenance. Severity weight: 7. Out-of-service eligible.

OOS Eligible
Severity Weight
7
OOS Eligible
Yes
BASIC Category
Vehicle Maintenance
Code System
FMCSR
Code
393.48(b)
Code System
FMCSR
BASIC Category
OOS Eligible
Yes
Severity Weight
7
Violation Group
BASIC 5

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.

Data sources & freshness

FMCSA Vehicle Inspections and Violations
Updated 3 months ago
Federal Motor Carrier Safety Regulations (49 CFR)
Unknown freshness