FMCSA · Safety Measurement System register · California

Vehicle Maintenance in California

• 499,099Violations recorded
• 316,711Registered carriers in the state
• 734,723State inspections addressing it

Brakes, lights, tyres and the rest of the mechanical condition of the vehicle. California carries 499,099 violations in this category, out of 5,090,851 recorded nationally, which places it 2 of 51 jurisdictions the register covers. Its share of the national figure is 0.098 as a fraction, banked by the build rather than turned into a ratio here. Nationally, a violation in this category carries an average severity weight of 3.8.

The state’s carriers by fleet size

• 1 power unit 179,215
• 2 to 5 power units 47,583
• 6 to 20 power units 12,515
• 21 to 100 power units 3,436
• 101 to 1,000 power units 508
• 1,000 or more power units 156

Other categories recorded in California

• Controlled Substances/Alcohol 475
• Crash Indicator 18,179
• Driver Fitness 17,809
• Hazardous Materials Compliance 2,806
• Hours-of-Service Compliance 51,810
• Unsafe Driving 51,987

Vehicle Maintenance across every jurisdiction → Every category in California →

Figures from the federal source files: EPA’s ECHO downloads, CMS provider files and the FMCSA census.

Counts from FMCSA SMS input files on data.transportation.gov: kjg3-diqy (Motor Carrier Census, 2,122,441 rows), rbkj-cgst (Inspection, 5,834,148), 8mt8-2mdr (Violation, 6,808,260), 4wxs-vbns (Crash, 255,582), p2mt-9ige (Out of Service Orders, 399,600); SoQL aggregates fetched 2026-09-16. The rank is taken over the jurisdictions this desk publishes, and the national figure beside it is the register’s own total for the category.