FMCSA · Safety Measurement System register · California

Controlled Substances/Alcohol in California

• 475Violations recorded
• 316,711Registered carriers in the state
• 758,493State inspections addressing it

Driving under the influence of drugs or alcohol. California carries 475 violations in this category, out of 14,736 recorded nationally, which places it 8 of 51 jurisdictions the register covers. Its share of the national figure is 0.032 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 8.55.

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

• 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 499,099

Controlled Substances/Alcohol 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.